editeng/source/items/frmitems.cxx                |   68 +++++++++++------------
 editeng/source/items/numitem.cxx                 |    4 -
 editeng/source/items/paraitem.cxx                |    8 +-
 editeng/source/items/textitem.cxx                |   34 ++++-------
 include/tools/UnitConversion.hxx                 |    4 -
 sc/qa/unit/ucalc.cxx                             |    8 +-
 sc/source/core/data/drwlayer.cxx                 |   13 +---
 sc/source/core/data/patattr.cxx                  |    6 +-
 sc/source/core/tool/docoptio.cxx                 |    2 
 sc/source/filter/oox/worksheethelper.cxx         |    4 -
 sc/source/ui/unoobj/cellsuno.cxx                 |   12 ++--
 sc/source/ui/unoobj/defltuno.cxx                 |    2 
 sc/source/ui/unoobj/docuno.cxx                   |    8 +-
 sc/source/ui/unoobj/styleuno.cxx                 |    2 
 sc/source/ui/view/cellsh3.cxx                    |   12 ++--
 sd/qa/unit/tiledrendering/tiledrendering.cxx     |   56 +++++++++---------
 sd/source/ui/unoidl/unomodel.cxx                 |    2 
 svl/source/items/ptitem.cxx                      |    6 +-
 svx/source/dialog/rulritem.cxx                   |   12 ++--
 svx/source/items/algitem.cxx                     |    8 +-
 svx/source/items/grfitem.cxx                     |    8 +-
 svx/source/table/svdotable.cxx                   |   24 ++++----
 svx/source/table/tablertfexporter.cxx            |    2 
 svx/source/unodraw/SvxXTextColumns.cxx           |    2 
 svx/source/xoutdev/xattr.cxx                     |    2 
 sw/qa/core/layout/layout.cxx                     |    8 +-
 sw/qa/extras/rtfimport/rtfimport.cxx             |    8 +-
 sw/source/core/draw/dflyobj.cxx                  |    8 +-
 sw/source/core/inc/rootfrm.hxx                   |    2 
 sw/source/core/layout/atrfrm.cxx                 |   18 +++---
 sw/source/core/para/paratr.cxx                   |    4 -
 sw/source/core/unocore/unodraw.cxx               |    6 +-
 sw/source/core/unocore/unoidx.cxx                |    2 
 sw/source/core/unocore/unosett.cxx               |   22 +++----
 sw/source/core/unocore/unotbl.cxx                |   20 +++---
 sw/source/filter/ww8/docxattributeoutput.cxx     |    8 +-
 sw/source/filter/ww8/rtfattributeoutput.cxx      |    4 -
 sw/source/filter/xml/xmltexti.cxx                |    4 -
 sw/source/uibase/app/appopt.cxx                  |    2 
 sw/source/uibase/app/docshini.cxx                |    2 
 sw/source/uibase/config/fontcfg.cxx              |    2 
 sw/source/uibase/config/modcfg.cxx               |    8 +-
 sw/source/uibase/config/usrpref.cxx              |    4 -
 sw/source/uibase/envelp/envimg.cxx               |   16 ++---
 sw/source/uibase/envelp/labelcfg.cxx             |   16 ++---
 sw/source/uibase/envelp/labimg.cxx               |   16 ++---
 sw/source/uibase/shells/grfsh.cxx                |    8 +-
 sw/source/uibase/uiview/view.cxx                 |   12 ++--
 sw/source/uibase/uno/unomod.cxx                  |    4 -
 sw/source/uibase/uno/unotxdoc.cxx                |   12 ++--
 sw/source/uibase/utlui/uiitems.cxx               |    4 -
 tools/qa/cppunit/test_100mm2twips.cxx            |    7 --
 vcl/source/filter/ipdf/pdfread.cxx               |   12 ++--
 writerfilter/source/dmapper/NumberingManager.cxx |    4 -
 xmloff/source/transform/TransformerBase.cxx      |    2 
 55 files changed, 267 insertions(+), 287 deletions(-)

New commits:
commit bfed58821fc3a83fec4a985087cd45fa963bed3e
Author:     Mike Kaganski <mike.kagan...@collabora.com>
AuthorDate: Wed Aug 11 13:13:35 2021 +0300
Commit:     Mike Kaganski <mike.kagan...@collabora.com>
CommitDate: Wed Aug 11 14:19:24 2021 +0200

    Drop convertMm100ToTwip in favor of the new o3tl::toTwips
    
    Step by step, duplicates from <tools/UnitConversion.hxx> may go
    
    Change-Id: Id4c03ff8adc120ae06dbfdbdfb4f5ff0bb51f489
    Reviewed-on: https://gerrit.libreoffice.org/c/core/+/120315
    Tested-by: Jenkins
    Reviewed-by: Mike Kaganski <mike.kagan...@collabora.com>

diff --git a/editeng/source/items/frmitems.cxx 
b/editeng/source/items/frmitems.cxx
index add9c3654f65..6aec451c8024 100644
--- a/editeng/source/items/frmitems.cxx
+++ b/editeng/source/items/frmitems.cxx
@@ -181,8 +181,8 @@ bool SvxSizeItem::PutValue( const uno::Any& rVal, sal_uInt8 
nMemberId )
             {
                 if(bConvert)
                 {
-                    aTmp.Height = convertMm100ToTwip(aTmp.Height);
-                    aTmp.Width = convertMm100ToTwip(aTmp.Width);
+                    aTmp.Height = o3tl::toTwips(aTmp.Height, 
o3tl::Length::mm100);
+                    aTmp.Width = o3tl::toTwips(aTmp.Width, 
o3tl::Length::mm100);
                 }
                 m_aSize = Size( aTmp.Width, aTmp.Height );
             }
@@ -198,7 +198,7 @@ bool SvxSizeItem::PutValue( const uno::Any& rVal, sal_uInt8 
nMemberId )
             if(!(rVal >>= nVal ))
                 return false;
 
-            m_aSize.setWidth( bConvert ? convertMm100ToTwip(nVal) : nVal );
+            m_aSize.setWidth( bConvert ? o3tl::toTwips(nVal, 
o3tl::Length::mm100) : nVal );
         }
         break;
         case MID_SIZE_HEIGHT:
@@ -207,7 +207,7 @@ bool SvxSizeItem::PutValue( const uno::Any& rVal, sal_uInt8 
nMemberId )
             if(!(rVal >>= nVal))
                 return true;
 
-            m_aSize.setHeight( bConvert ? convertMm100ToTwip(nVal) : nVal );
+            m_aSize.setHeight( bConvert ? o3tl::toTwips(nVal, 
o3tl::Length::mm100) : nVal );
         }
         break;
         default: OSL_FAIL("Wrong MemberId!");
@@ -407,26 +407,26 @@ bool SvxLRSpaceItem::PutValue( const uno::Any& rVal, 
sal_uInt8 nMemberId )
             if(!(rVal >>= aLRSpace))
                 return false;
 
-            SetLeft( bConvert ? convertMm100ToTwip(aLRSpace.Left) : 
aLRSpace.Left );
-            SetTextLeft( bConvert ? convertMm100ToTwip(aLRSpace.TextLeft) : 
aLRSpace.TextLeft );
-            SetRight(bConvert ? convertMm100ToTwip(aLRSpace.Right) : 
aLRSpace.Right);
+            SetLeft( bConvert ? o3tl::toTwips(aLRSpace.Left, 
o3tl::Length::mm100) : aLRSpace.Left );
+            SetTextLeft( bConvert ? o3tl::toTwips(aLRSpace.TextLeft, 
o3tl::Length::mm100) : aLRSpace.TextLeft );
+            SetRight(bConvert ? o3tl::toTwips(aLRSpace.Right, 
o3tl::Length::mm100) : aLRSpace.Right);
             nPropLeftMargin = aLRSpace.ScaleLeft;
             nPropRightMargin = aLRSpace.ScaleRight;
-            SetTextFirstLineOffset(static_cast<short>(bConvert ?  
convertMm100ToTwip(aLRSpace.FirstLine) : aLRSpace.FirstLine));
-            SetPropTextFirstLineOffset ( 
static_cast<sal_uInt16>(aLRSpace.ScaleFirstLine) );
+            SetTextFirstLineOffset(bConvert ? 
o3tl::toTwips(aLRSpace.FirstLine, o3tl::Length::mm100) : aLRSpace.FirstLine);
+            SetPropTextFirstLineOffset ( aLRSpace.ScaleFirstLine );
             SetAutoFirst( aLRSpace.AutoFirstLine );
             break;
         }
         case MID_L_MARGIN:
-            SetLeft( bConvert ? convertMm100ToTwip(nVal) : nVal );
+            SetLeft( bConvert ? o3tl::toTwips(nVal, o3tl::Length::mm100) : 
nVal );
             break;
 
         case MID_TXT_LMARGIN :
-            SetTextLeft( bConvert ? convertMm100ToTwip(nVal) : nVal );
+            SetTextLeft( bConvert ? o3tl::toTwips(nVal, o3tl::Length::mm100) : 
nVal );
         break;
 
         case MID_R_MARGIN:
-            SetRight(bConvert ? convertMm100ToTwip(nVal) : nVal);
+            SetRight(bConvert ? o3tl::toTwips(nVal, o3tl::Length::mm100) : 
nVal);
             break;
         case MID_L_REL_MARGIN:
         case MID_R_REL_MARGIN:
@@ -444,11 +444,11 @@ bool SvxLRSpaceItem::PutValue( const uno::Any& rVal, 
sal_uInt8 nMemberId )
         }
         break;
         case MID_FIRST_LINE_INDENT     :
-            SetTextFirstLineOffset(static_cast<short>(bConvert ?  
convertMm100ToTwip(nVal) : nVal));
+            SetTextFirstLineOffset(bConvert ? o3tl::toTwips(nVal, 
o3tl::Length::mm100) : nVal);
             break;
 
         case MID_FIRST_LINE_REL_INDENT:
-            SetPropTextFirstLineOffset ( static_cast<sal_uInt16>(nVal) );
+            SetPropTextFirstLineOffset ( nVal );
             break;
 
         case MID_FIRST_AUTO:
@@ -456,7 +456,7 @@ bool SvxLRSpaceItem::PutValue( const uno::Any& rVal, 
sal_uInt8 nMemberId )
             break;
 
         case MID_GUTTER_MARGIN:
-            SetGutterMargin(bConvert ? convertMm100ToTwip(nVal) : nVal);
+            SetGutterMargin(bConvert ? o3tl::toTwips(nVal, 
o3tl::Length::mm100) : nVal);
             break;
 
         default:
@@ -716,8 +716,8 @@ bool SvxULSpaceItem::PutValue( const uno::Any& rVal, 
sal_uInt8 nMemberId )
             if ( !(rVal >>= aUpperLowerMarginScale ))
                 return false;
             {
-                SetUpper(static_cast<sal_uInt16>(bConvert ? 
convertMm100ToTwip( aUpperLowerMarginScale.Upper ) : 
aUpperLowerMarginScale.Upper));
-                SetLower(static_cast<sal_uInt16>(bConvert ? 
convertMm100ToTwip( aUpperLowerMarginScale.Lower ) : 
aUpperLowerMarginScale.Lower));
+                SetUpper(bConvert ? 
o3tl::toTwips(aUpperLowerMarginScale.Upper, o3tl::Length::mm100) : 
aUpperLowerMarginScale.Upper);
+                SetLower(bConvert ? 
o3tl::toTwips(aUpperLowerMarginScale.Lower, o3tl::Length::mm100) : 
aUpperLowerMarginScale.Lower);
                 if( aUpperLowerMarginScale.ScaleUpper > 1 )
                     nPropUpper = aUpperLowerMarginScale.ScaleUpper;
                 if( aUpperLowerMarginScale.ScaleLower > 1 )
@@ -728,12 +728,12 @@ bool SvxULSpaceItem::PutValue( const uno::Any& rVal, 
sal_uInt8 nMemberId )
         case MID_UP_MARGIN :
             if(!(rVal >>= nVal))
                 return false;
-            SetUpper(static_cast<sal_uInt16>(bConvert ? 
convertMm100ToTwip(nVal) : nVal));
+            SetUpper(bConvert ? o3tl::toTwips(nVal, o3tl::Length::mm100) : 
nVal);
             break;
         case MID_LO_MARGIN :
             if(!(rVal >>= nVal) || nVal < 0)
                 return false;
-            SetLower(static_cast<sal_uInt16>(bConvert ? 
convertMm100ToTwip(nVal) : nVal));
+            SetLower(bConvert ? o3tl::toTwips(nVal, o3tl::Length::mm100) : 
nVal);
             break;
         case MID_CTX_MARGIN :
             if (!(rVal >>= bVal))
@@ -1125,7 +1125,7 @@ bool SvxShadowItem::PutValue( const uno::Any& rVal, 
sal_uInt8 nMemberId )
             default: ; // prevent warning
         }
 
-        nWidth = bConvert ? convertMm100ToTwip(aShadow.ShadowWidth) : 
aShadow.ShadowWidth;
+        nWidth = bConvert ? o3tl::toTwips(aShadow.ShadowWidth, 
o3tl::Length::mm100) : aShadow.ShadowWidth;
         Color aSet(ColorTransparency, aShadow.Color);
         aShadowColor = aSet;
     }
@@ -1462,9 +1462,9 @@ lcl_lineToSvxLine(const table::BorderLine& rLine, 
SvxBorderLine& rSvxLine, bool
     if ( bGuessWidth )
     {
         rSvxLine.GuessLinesWidths( rSvxLine.GetBorderLineStyle(),
-                sal_uInt16( bConvert ? 
convertMm100ToTwip(rLine.OuterLineWidth) : rLine.OuterLineWidth  ),
-                sal_uInt16( bConvert ? 
convertMm100ToTwip(rLine.InnerLineWidth) : rLine.InnerLineWidth  ),
-                sal_uInt16( bConvert ? convertMm100ToTwip(rLine.LineDistance ) 
 : rLine.LineDistance  ));
+                bConvert ? o3tl::toTwips(rLine.OuterLineWidth, 
o3tl::Length::mm100) : rLine.OuterLineWidth,
+                bConvert ? o3tl::toTwips(rLine.InnerLineWidth, 
o3tl::Length::mm100) : rLine.InnerLineWidth,
+                bConvert ? o3tl::toTwips(rLine.LineDistance, 
o3tl::Length::mm100) : rLine.LineDistance );
     }
 
     bool bRet = !rSvxLine.isEmpty();
@@ -1492,7 +1492,7 @@ SvxBoxItem::LineToSvxLine(const css::table::BorderLine2& 
rLine, SvxBorderLine& r
     bool bGuessWidth = true;
     if ( rLine.LineWidth )
     {
-        rSvxLine.SetWidth( bConvert? convertMm100ToTwip( rLine.LineWidth ) : 
rLine.LineWidth );
+        rSvxLine.SetWidth( bConvert? o3tl::toTwips(rLine.LineWidth, 
o3tl::Length::mm100) : rLine.LineWidth );
         // fdo#46112: double does not necessarily mean symmetric
         // for backwards compatibility
         bGuessWidth = (SvxBorderLineStyle::DOUBLE == nStyle || 
SvxBorderLineStyle::DOUBLE_THIN == nStyle) &&
@@ -1573,11 +1573,11 @@ bool SvxBoxItem::PutValue( const uno::Any& rVal, 
sal_uInt8 nMemberId )
                     if ( aSeq[n] >>= nDist )
                     {
                         if( bConvert )
-                            nDist = convertMm100ToTwip(nDist);
+                            nDist = o3tl::toTwips(nDist, o3tl::Length::mm100);
                         if ( n == 4 )
-                            SetAllDistances(sal_uInt16(nDist));
+                            SetAllDistances(nDist);
                         else
-                            SetDistance( sal_uInt16( nDist ), nLines[n-5] );
+                            SetDistance( nDist, nLines[n-5] );
                     }
                     else
                         return false;
@@ -1650,7 +1650,7 @@ bool SvxBoxItem::PutValue( const uno::Any& rVal, 
sal_uInt8 nMemberId )
                 tools::Long nWidth(0);
                 rVal >>= nWidth;
                 if( bConvert )
-                    nWidth = convertMm100ToTwip( nWidth );
+                    nWidth = o3tl::toTwips(nWidth, o3tl::Length::mm100);
 
                 // Set the line Width on all borders
                 for( SvxBoxItemLine n : o3tl::enumrange<SvxBoxItemLine>() )
@@ -1672,11 +1672,11 @@ bool SvxBoxItem::PutValue( const uno::Any& rVal, 
sal_uInt8 nMemberId )
         if(nDist >= 0)
         {
             if( bConvert )
-                nDist = convertMm100ToTwip(nDist);
+                nDist = o3tl::toTwips(nDist, o3tl::Length::mm100);
             if( nMemberId == BORDER_DISTANCE )
-                SetAllDistances(sal_uInt16(nDist));
+                SetAllDistances(nDist);
             else
-                SetDistance( sal_uInt16( nDist ), nLine );
+                SetDistance( nDist, nLine );
         }
     }
     else
@@ -2294,8 +2294,8 @@ bool SvxBoxInfoItem::PutValue( const uno::Any& rVal, 
sal_uInt8 nMemberId )
                 if (( aSeq[4] >>= nVal ) && ( nVal >= 0 ))
                 {
                     if( bConvert )
-                        nVal = convertMm100ToTwip(nVal);
-                    SetDefDist( static_cast<sal_uInt16>(nVal) );
+                        nVal = o3tl::toTwips(nVal, o3tl::Length::mm100);
+                    SetDefDist( nVal );
                 }
             }
             return true;
@@ -2411,7 +2411,7 @@ bool SvxBoxInfoItem::PutValue( const uno::Any& rVal, 
sal_uInt8 nMemberId )
             if ( bRet && nVal>=0 )
             {
                 if( bConvert )
-                    nVal = convertMm100ToTwip(nVal);
+                    nVal = o3tl::toTwips(nVal, o3tl::Length::mm100);
                 SetDefDist( static_cast<sal_uInt16>(nVal) );
             }
             break;
diff --git a/editeng/source/items/numitem.cxx b/editeng/source/items/numitem.cxx
index 12ee8dbe533d..229ac4affd2c 100644
--- a/editeng/source/items/numitem.cxx
+++ b/editeng/source/items/numitem.cxx
@@ -671,8 +671,8 @@ SvxNumRule::SvxNumRule( SvxNumRuleFlags nFeatures,
                 if ( eDefaultNumberFormatPositionAndSpaceMode ==
                                     SvxNumberFormat::LABEL_WIDTH_AND_POSITION )
                 {
-                    aFmts[i]->SetAbsLSpace( 
convertMm100ToTwip(DEF_WRITER_LSPACE * (i+1)) );
-                    
aFmts[i]->SetFirstLineOffset(convertMm100ToTwip(-DEF_WRITER_LSPACE));
+                    aFmts[i]->SetAbsLSpace(o3tl::toTwips(DEF_WRITER_LSPACE * 
(i+1), o3tl::Length::mm100));
+                    
aFmts[i]->SetFirstLineOffset(o3tl::toTwips(-DEF_WRITER_LSPACE, 
o3tl::Length::mm100));
                 }
                 else if ( eDefaultNumberFormatPositionAndSpaceMode ==
                                             SvxNumberFormat::LABEL_ALIGNMENT )
diff --git a/editeng/source/items/paraitem.cxx 
b/editeng/source/items/paraitem.cxx
index 4dc508a6939f..3d097e7f040d 100644
--- a/editeng/source/items/paraitem.cxx
+++ b/editeng/source/items/paraitem.cxx
@@ -188,7 +188,7 @@ bool SvxLineSpacingItem::PutValue( const uno::Any& rVal, 
sal_uInt8 nMemberId )
                 eLineSpaceRule = SvxLineSpaceRule::Auto;
                 nInterLineSpace = aLSp.Height;
                 if(bConvert)
-                    nInterLineSpace = 
static_cast<short>(convertMm100ToTwip(nInterLineSpace));
+                    nInterLineSpace = o3tl::toTwips(nInterLineSpace, 
o3tl::Length::mm100);
 
             }
             break;
@@ -209,7 +209,7 @@ bool SvxLineSpacingItem::PutValue( const uno::Any& rVal, 
sal_uInt8 nMemberId )
                 eLineSpaceRule = aLSp.Mode == style::LineSpacingMode::FIX ? 
SvxLineSpaceRule::Fix : SvxLineSpaceRule::Min;
                 nLineHeight = aLSp.Height;
                 if(bConvert)
-                    nLineHeight = 
static_cast<sal_uInt16>(convertMm100ToTwip(nLineHeight));
+                    nLineHeight = o3tl::toTwips(nLineHeight, 
o3tl::Length::mm100);
             }
             break;
         }
@@ -880,7 +880,7 @@ bool SvxTabStopItem::PutValue( const uno::Any& rVal, 
sal_uInt8 nMemberId )
                 }
                 sal_Unicode cFill = pArr[i].FillChar;
                 sal_Unicode cDecimal = pArr[i].DecimalChar;
-                SvxTabStop aTab( bConvert ? 
convertMm100ToTwip(pArr[i].Position) : pArr[i].Position,
+                SvxTabStop aTab( bConvert ? o3tl::toTwips(pArr[i].Position, 
o3tl::Length::mm100) : pArr[i].Position,
                                     eAdjust,
                                     cDecimal,
                                     cFill );
@@ -894,7 +894,7 @@ bool SvxTabStopItem::PutValue( const uno::Any& rVal, 
sal_uInt8 nMemberId )
             if (!(rVal >>= nNewPos) )
                 return false;
             if (bConvert)
-                nNewPos = convertMm100ToTwip ( nNewPos );
+                nNewPos = o3tl::toTwips(nNewPos, o3tl::Length::mm100);
             if (nNewPos <= 0)
                 return false;
             const SvxTabStop& rTab = maTabStops.front();
diff --git a/editeng/source/items/textitem.cxx 
b/editeng/source/items/textitem.cxx
index 433352b4653f..64236dd542f1 100644
--- a/editeng/source/items/textitem.cxx
+++ b/editeng/source/items/textitem.cxx
@@ -594,33 +594,30 @@ bool SvxFontHeightItem::QueryValue( uno::Any& rVal, 
sal_uInt8 nMemberId ) const
             // CONVERT_TWIPS is not set.
             if( bConvert )
             {
-                aFontHeight.Height = static_cast<float>( nHeight / 20.0 );
+                aFontHeight.Height = o3tl::convert<double>(nHeight, 
o3tl::Length::twip, o3tl::Length::pt);
             }
             else
             {
-                double fPoints = convertMm100ToTwip(nHeight) / 20.0;
-                float fRoundPoints =
-                    static_cast<float>(::rtl::math::round(fPoints, 1));
-                aFontHeight.Height = fRoundPoints;
+                double fPoints = o3tl::convert<double>(nHeight, 
o3tl::Length::mm100, o3tl::Length::pt);
+                aFontHeight.Height = rtl::math::round(fPoints, 1);
             }
 
-            aFontHeight.Prop = static_cast<sal_Int16>(MapUnit::MapRelative == 
ePropUnit ? nProp : 100);
+            aFontHeight.Prop = MapUnit::MapRelative == ePropUnit ? nProp : 100;
 
-            float fRet = static_cast<float>(static_cast<short>(nProp));
+            float fRet = nProp;
             switch( ePropUnit )
             {
                 case MapUnit::MapRelative:
                     fRet = 0.;
                 break;
                 case MapUnit::Map100thMM:
-                    fRet = convertMm100ToTwip(fRet);
-                    fRet /= 20.;
+                    fRet = o3tl::convert(fRet, o3tl::Length::mm100, 
o3tl::Length::pt);
                 break;
                 case MapUnit::MapPoint:
 
                 break;
                 case MapUnit::MapTwip:
-                    fRet /= 20.;
+                    fRet = o3tl::convert(fRet, o3tl::Length::twip, 
o3tl::Length::pt);
                 break;
                 default: ;//prevent warning
             }
@@ -634,14 +631,12 @@ bool SvxFontHeightItem::QueryValue( uno::Any& rVal, 
sal_uInt8 nMemberId ) const
             // CONVERT_TWIPS is not set.
             if( bConvert )
             {
-                rVal <<= static_cast<float>( nHeight / 20.0 );
+                rVal <<= static_cast<float>(o3tl::convert<double>(nHeight, 
o3tl::Length::twip, o3tl::Length::pt));
             }
             else
             {
-                double fPoints = convertMm100ToTwip(nHeight) / 20.0;
-                float fRoundPoints =
-                    static_cast<float>(::rtl::math::round(fPoints, 1));
-                rVal <<= fRoundPoints;
+                double fPoints = o3tl::convert<double>(nHeight, 
o3tl::Length::mm100, o3tl::Length::pt);
+                rVal <<= static_cast<float>(::rtl::math::round(fPoints, 1));
             }
         }
         break;
@@ -650,21 +645,20 @@ bool SvxFontHeightItem::QueryValue( uno::Any& rVal, 
sal_uInt8 nMemberId ) const
         break;
         case MID_FONTHEIGHT_DIFF:
         {
-            float fRet = static_cast<float>(static_cast<short>(nProp));
+            float fRet = nProp;
             switch( ePropUnit )
             {
                 case MapUnit::MapRelative:
                     fRet = 0.;
                 break;
                 case MapUnit::Map100thMM:
-                    fRet = convertMm100ToTwip(fRet);
-                    fRet /= 20.;
+                    fRet = o3tl::convert(fRet, o3tl::Length::mm100, 
o3tl::Length::pt);
                 break;
                 case MapUnit::MapPoint:
 
                 break;
                 case MapUnit::MapTwip:
-                    fRet /= 20.;
+                    fRet = o3tl::convert(fRet, o3tl::Length::twip, 
o3tl::Length::pt);
                 break;
                 default: ;//prevent warning
             }
@@ -1500,7 +1494,7 @@ bool SvxKerningItem::PutValue( const uno::Any& rVal, 
sal_uInt8 nMemberId)
     if(!(rVal >>= nVal))
         return false;
     if(nMemberId & CONVERT_TWIPS)
-        nVal = static_cast<sal_Int16>(convertMm100ToTwip(nVal));
+        nVal = o3tl::toTwips(nVal, o3tl::Length::mm100);
     SetValue(nVal);
     return true;
 }
diff --git a/include/tools/UnitConversion.hxx b/include/tools/UnitConversion.hxx
index 7d3bdf565c1d..43237e0514c5 100644
--- a/include/tools/UnitConversion.hxx
+++ b/include/tools/UnitConversion.hxx
@@ -94,10 +94,6 @@ template <typename N> constexpr auto convertTwipToMm100(N n)
 {
     return o3tl::convert(n, o3tl::Length::twip, o3tl::Length::mm100);
 }
-template <typename N> constexpr auto convertMm100ToTwip(N n)
-{
-    return o3tl::convert(n, o3tl::Length::mm100, o3tl::Length::twip);
-}
 
 constexpr sal_Int64 sanitiseMm100ToTwip(sal_Int64 n)
 {
diff --git a/sc/qa/unit/ucalc.cxx b/sc/qa/unit/ucalc.cxx
index 5f2145714e3a..18dec103b552 100644
--- a/sc/qa/unit/ucalc.cxx
+++ b/sc/qa/unit/ucalc.cxx
@@ -5125,10 +5125,10 @@ void Test::testAnchoredRotatedShape()
     CPPUNIT_ASSERT_MESSAGE("must have a draw layer", pDrawLayer != nullptr);
     SdrPage* pPage = pDrawLayer->GetPage(0);
     CPPUNIT_ASSERT_MESSAGE("must have a draw page", pPage != nullptr);
-    m_pDoc->SetRowHeightRange(0, MAXROW, 0, convertMm100ToTwip(1000));
+    m_pDoc->SetRowHeightRange(0, MAXROW, 0, o3tl::toTwips(1000, 
o3tl::Length::mm100));
     constexpr tools::Long TOLERANCE = 30; //30 hmm
     for ( SCCOL nCol = 0; nCol < MAXCOL; ++nCol )
-        m_pDoc->SetColWidth(nCol, 0, convertMm100ToTwip(1000));
+        m_pDoc->SetColWidth(nCol, 0, o3tl::toTwips(1000, o3tl::Length::mm100));
     {
         //Add a rect
         tools::Rectangle aRect( 4000, 5000, 10000, 7000 );
@@ -5160,9 +5160,9 @@ void Test::testAnchoredRotatedShape()
         m_pDoc->SetDrawPageSize(0);
 
         // increase row 5 by 2000 hmm
-        m_pDoc->SetRowHeight(5, 0, convertMm100ToTwip(3000));
+        m_pDoc->SetRowHeight(5, 0, o3tl::toTwips(3000, o3tl::Length::mm100));
         // increase col 6 by 1000 hmm
-        m_pDoc->SetColWidth(6, 0, convertMm100ToTwip(2000));
+        m_pDoc->SetColWidth(6, 0, o3tl::toTwips(2000, o3tl::Length::mm100));
 
         aRotRect.setWidth( aRotRect.GetWidth() + 1000 );
         aRotRect.setHeight( aRotRect.GetHeight() + 2000 );
diff --git a/sc/source/core/data/drwlayer.cxx b/sc/source/core/data/drwlayer.cxx
index 79b52627e015..58c9b8585ecf 100644
--- a/sc/source/core/data/drwlayer.cxx
+++ b/sc/source/core/data/drwlayer.cxx
@@ -209,10 +209,7 @@ ScTabSizeChangedHint::~ScTabSizeChangedHint()
 
 static void lcl_ReverseTwipsToMM( tools::Rectangle& rRect )
 {
-    rRect.SetLeft(convertMm100ToTwip(rRect.Left()));
-    rRect.SetRight(convertMm100ToTwip(rRect.Right()));
-    rRect.SetTop(convertMm100ToTwip(rRect.Top()));
-    rRect.SetBottom(convertMm100ToTwip(rRect.Bottom()));
+    rRect = o3tl::convert(rRect, o3tl::Length::mm100, o3tl::Length::twip);
 }
 
 static ScRange lcl_getClipRangeFromClipDoc(ScDocument* pClipDoc, SCTAB 
nClipTab)
@@ -1344,8 +1341,8 @@ bool ScDrawLayer::GetPrintArea( ScRange& rRange, bool 
bSetHor, bool bSetVer ) co
 
         if (bSetHor)
         {
-            nStartX = convertMm100ToTwip(nStartX);
-            nEndX = convertMm100ToTwip(nEndX);
+            nStartX = o3tl::toTwips(nStartX, o3tl::Length::mm100);
+            nEndX = o3tl::toTwips(nEndX, o3tl::Length::mm100);
             tools::Long nWidth;
 
             nWidth = 0;
@@ -1381,8 +1378,8 @@ bool ScDrawLayer::GetPrintArea( ScRange& rRange, bool 
bSetHor, bool bSetVer ) co
 
         if (bSetVer)
         {
-            nStartY = convertMm100ToTwip(nStartY);
-            nEndY = convertMm100ToTwip(nEndY);
+            nStartY = o3tl::toTwips(nStartY, o3tl::Length::mm100);
+            nEndY = o3tl::toTwips(nEndY, o3tl::Length::mm100);
             SCROW nRow = pDoc->GetRowForHeight( nTab, nStartY);
             rRange.aStart.SetRow( nRow>0 ? (nRow-1) : 0);
             nRow = pDoc->GetRowForHeight( nTab, nEndY);
diff --git a/sc/source/core/data/patattr.cxx b/sc/source/core/data/patattr.cxx
index fb8e7aee033f..5ce565a98257 100644
--- a/sc/source/core/data/patattr.cxx
+++ b/sc/source/core/data/patattr.cxx
@@ -792,13 +792,13 @@ void ScPatternAttr::GetFromEditItemSet( SfxItemSet& 
rDestSet, const SfxItemSet&
         rDestSet.Put( *static_cast<const SvxFontItem*>(pItem), ATTR_CTL_FONT );
 
     if (rEditSet.GetItemState(EE_CHAR_FONTHEIGHT,true,&pItem) == 
SfxItemState::SET)
-        rDestSet.Put( SvxFontHeightItem( convertMm100ToTwip( static_cast<const 
SvxFontHeightItem*>(pItem)->GetHeight() ),
+        rDestSet.Put( SvxFontHeightItem(o3tl::toTwips(static_cast<const 
SvxFontHeightItem*>(pItem)->GetHeight(), o3tl::Length::mm100),
                         100, ATTR_FONT_HEIGHT ) );
     if (rEditSet.GetItemState(EE_CHAR_FONTHEIGHT_CJK,true,&pItem) == 
SfxItemState::SET)
-        rDestSet.Put( SvxFontHeightItem( convertMm100ToTwip( static_cast<const 
SvxFontHeightItem*>(pItem)->GetHeight() ),
+        rDestSet.Put( SvxFontHeightItem(o3tl::toTwips(static_cast<const 
SvxFontHeightItem*>(pItem)->GetHeight(), o3tl::Length::mm100),
                         100, ATTR_CJK_FONT_HEIGHT ) );
     if (rEditSet.GetItemState(EE_CHAR_FONTHEIGHT_CTL,true,&pItem) == 
SfxItemState::SET)
-        rDestSet.Put( SvxFontHeightItem( convertMm100ToTwip( static_cast<const 
SvxFontHeightItem*>(pItem)->GetHeight() ),
+        rDestSet.Put( SvxFontHeightItem(o3tl::toTwips(static_cast<const 
SvxFontHeightItem*>(pItem)->GetHeight(), o3tl::Length::mm100),
                         100, ATTR_CTL_FONT_HEIGHT ) );
 
     if (rEditSet.GetItemState(EE_CHAR_WEIGHT,true,&pItem) == SfxItemState::SET)
diff --git a/sc/source/core/tool/docoptio.cxx b/sc/source/core/tool/docoptio.cxx
index 5810bff6e8ea..2b54cd2a52d1 100644
--- a/sc/source/core/tool/docoptio.cxx
+++ b/sc/source/core/tool/docoptio.cxx
@@ -272,7 +272,7 @@ ScDocCfg::ScDocCfg() :
                     case SCDOCLAYOUTOPT_TABSTOP:
                         // TabDistance in ScDocOptions is in twips
                         if (pValues[nProp] >>= nIntVal)
-                            
SetTabDistance(static_cast<sal_uInt16>(convertMm100ToTwip(nIntVal)));
+                            SetTabDistance(o3tl::toTwips(nIntVal, 
o3tl::Length::mm100));
                         break;
                 }
             }
diff --git a/sc/source/filter/oox/worksheethelper.cxx 
b/sc/source/filter/oox/worksheethelper.cxx
index 6d07bfd57cad..a5fc023f8a99 100644
--- a/sc/source/filter/oox/worksheethelper.cxx
+++ b/sc/source/filter/oox/worksheethelper.cxx
@@ -1222,7 +1222,7 @@ void WorksheetGlobals::convertColumns( OutlineLevelVec& 
orColLevels,
     {
         for( SCCOL nCol = nStartCol; nCol <= nEndCol; ++nCol )
         {
-            rDoc.SetColWidthOnly(nCol, nTab, 
static_cast<sal_uInt16>(convertMm100ToTwip(nWidth)));
+            rDoc.SetColWidthOnly(nCol, nTab, o3tl::toTwips(nWidth, 
o3tl::Length::mm100));
         }
     }
 
@@ -1278,7 +1278,7 @@ void WorksheetGlobals::convertRows(OutlineLevelVec& 
orRowLevels, const ValueRang
         /* always import the row height, ensures better layout */
         ScDocument& rDoc = getScDocument();
         rDoc.SetRowHeightOnly(nStartRow, nEndRow, nTab,
-                              
static_cast<sal_uInt16>(convertMm100ToTwip(nHeight)));
+                              o3tl::toTwips(nHeight, o3tl::Length::mm100));
         if(rModel.mbCustomHeight)
             rDoc.SetManualHeight( nStartRow, nEndRow, nTab, true );
     }
diff --git a/sc/source/ui/unoobj/cellsuno.cxx b/sc/source/ui/unoobj/cellsuno.cxx
index 21be10d87a39..8828d4dd2af8 100644
--- a/sc/source/ui/unoobj/cellsuno.cxx
+++ b/sc/source/ui/unoobj/cellsuno.cxx
@@ -951,7 +951,7 @@ template<typename TableBorderType>
 void lcl_fillBoxItems( SvxBoxItem& rOuter, SvxBoxInfoItem& rInner, const 
TableBorderType& rBorder )
 {
     ::editeng::SvxBorderLine aLine;
-    
rOuter.SetAllDistances(static_cast<sal_uInt16>(convertMm100ToTwip(rBorder.Distance)));
+    rOuter.SetAllDistances(o3tl::toTwips(rBorder.Distance, 
o3tl::Length::mm100));
     rOuter.SetLine( ScHelperFunctions::GetBorderLine( aLine, rBorder.TopLine 
),         SvxBoxItemLine::TOP );
     rOuter.SetLine( ScHelperFunctions::GetBorderLine( aLine, 
rBorder.BottomLine ),      SvxBoxItemLine::BOTTOM );
     rOuter.SetLine( ScHelperFunctions::GetBorderLine( aLine, rBorder.LeftLine 
),        SvxBoxItemLine::LEFT );
@@ -2074,7 +2074,7 @@ static void lcl_SetCellProperty( const 
SfxItemPropertyMapEntry& rEntry, const un
                 if ( !(rValue >>= nIntVal) )
                     throw lang::IllegalArgumentException();
 
-                
rSet.Put(ScIndentItem(static_cast<sal_uInt16>(convertMm100ToTwip(nIntVal))));
+                rSet.Put(ScIndentItem(o3tl::toTwips(nIntVal, 
o3tl::Length::mm100)));
 
             }
             break;
@@ -8385,9 +8385,9 @@ void ScTableColumnObj::SetOnePropertyValue(const 
SfxItemPropertyMapEntry* pEntry
         if ( aValue >>= nNewWidth )
         {
             //  property is 1/100mm, column width is twips
-            nNewWidth = convertMm100ToTwip(nNewWidth);
+            nNewWidth = o3tl::toTwips(nNewWidth, o3tl::Length::mm100);
             rFunc.SetWidthOrHeight(
-                true, aColArr, nTab, SC_SIZE_ORIGINAL, 
static_cast<sal_uInt16>(nNewWidth), true, true);
+                true, aColArr, nTab, SC_SIZE_ORIGINAL, nNewWidth, true, true);
         }
     }
     else if ( pEntry->nWID == SC_WID_UNO_CELLVIS )
@@ -8522,9 +8522,9 @@ void ScTableRowObj::SetOnePropertyValue( const 
SfxItemPropertyMapEntry* pEntry,
         if ( aValue >>= nNewHeight )
         {
             //  property is 1/100mm, row height is twips
-            nNewHeight = convertMm100ToTwip(nNewHeight);
+            nNewHeight = o3tl::toTwips(nNewHeight, o3tl::Length::mm100);
             rFunc.SetWidthOrHeight(
-                false, aRowArr, nTab, SC_SIZE_ORIGINAL, 
static_cast<sal_uInt16>(nNewHeight), true, true);
+                false, aRowArr, nTab, SC_SIZE_ORIGINAL, nNewHeight, true, 
true);
         }
     }
     else if ( pEntry->nWID == SC_WID_UNO_CELLVIS )
diff --git a/sc/source/ui/unoobj/defltuno.cxx b/sc/source/ui/unoobj/defltuno.cxx
index ae2fe0242892..7015985e5a74 100644
--- a/sc/source/ui/unoobj/defltuno.cxx
+++ b/sc/source/ui/unoobj/defltuno.cxx
@@ -147,7 +147,7 @@ void SAL_CALL ScDocDefaultsObj::setPropertyValue(
             sal_Int32 nValue = 0;
             if (aValue >>= nValue)
             {
-                
aDocOpt.SetTabDistance(static_cast<sal_uInt16>(convertMm100ToTwip(nValue)));
+                aDocOpt.SetTabDistance(o3tl::toTwips(nValue, 
o3tl::Length::mm100));
                 rDoc.SetDocOptions(aDocOpt);
             }
         }
diff --git a/sc/source/ui/unoobj/docuno.cxx b/sc/source/ui/unoobj/docuno.cxx
index 5cb03d5aa39b..405f6c11842b 100644
--- a/sc/source/ui/unoobj/docuno.cxx
+++ b/sc/source/ui/unoobj/docuno.cxx
@@ -4113,7 +4113,7 @@ void SAL_CALL ScTableColumnsObj::setPropertyValue(
         sal_Int32 nNewWidth = 0;
         if ( aValue >>= nNewWidth )
             rFunc.SetWidthOrHeight(
-                true, aColArr, nTab, SC_SIZE_ORIGINAL, 
static_cast<sal_uInt16>(convertMm100ToTwip(nNewWidth)), true, true);
+                true, aColArr, nTab, SC_SIZE_ORIGINAL, 
o3tl::toTwips(nNewWidth, o3tl::Length::mm100), true, true);
     }
     else if ( aPropertyName == SC_UNONAME_CELLVIS )
     {
@@ -4328,7 +4328,7 @@ void SAL_CALL ScTableRowsObj::setPropertyValue(
 
             // TODO: It's probably cleaner to use a different property name
             // for this.
-            rDoc.SetRowHeightOnly( nStartRow, nEndRow, nTab, 
static_cast<sal_uInt16>(convertMm100ToTwip(nNewHeight)) );
+            rDoc.SetRowHeightOnly( nStartRow, nEndRow, nTab, 
o3tl::toTwips(nNewHeight, o3tl::Length::mm100) );
         }
         else
         {
@@ -4351,12 +4351,12 @@ void SAL_CALL ScTableRowsObj::setPropertyValue(
                 // TODO: This is a band-aid fix.  Eventually we need to
                 // re-work ods' style import to get it to set styles to
                 // ScDocument directly.
-                rDoc.SetRowHeightOnly( nStartRow, nEndRow, nTab, 
static_cast<sal_uInt16>(convertMm100ToTwip(nNewHeight)) );
+                rDoc.SetRowHeightOnly( nStartRow, nEndRow, nTab, 
o3tl::toTwips(nNewHeight, o3tl::Length::mm100) );
                 rDoc.SetManualHeight( nStartRow, nEndRow, nTab, true );
             }
             else
                 rFunc.SetWidthOrHeight(
-                    false, aRowArr, nTab, SC_SIZE_ORIGINAL, 
static_cast<sal_uInt16>(convertMm100ToTwip(nNewHeight)), true, true);
+                    false, aRowArr, nTab, SC_SIZE_ORIGINAL, 
o3tl::toTwips(nNewHeight, o3tl::Length::mm100), true, true);
         }
     }
     else if ( aPropertyName == SC_UNONAME_CELLVIS )
diff --git a/sc/source/ui/unoobj/styleuno.cxx b/sc/source/ui/unoobj/styleuno.cxx
index 98568aa82994..3ad29af9e515 100644
--- a/sc/source/ui/unoobj/styleuno.cxx
+++ b/sc/source/ui/unoobj/styleuno.cxx
@@ -1543,7 +1543,7 @@ void ScStyleObj::setPropertyValue_Impl( 
std::u16string_view rPropertyName, const
                         {
                             sal_Int16 nVal = 0;
                             *pValue >>= nVal;
-                            
rSet.Put(ScIndentItem(static_cast<sal_uInt16>(convertMm100ToTwip(nVal))));
+                            rSet.Put(ScIndentItem(o3tl::toTwips(nVal, 
o3tl::Length::mm100)));
                         }
                         break;
                     case ATTR_ROTATE_VALUE:
diff --git a/sc/source/ui/view/cellsh3.cxx b/sc/source/ui/view/cellsh3.cxx
index e3f9c79368e0..088c403168d6 100644
--- a/sc/source/ui/view/cellsh3.cxx
+++ b/sc/source/ui/view/cellsh3.cxx
@@ -671,7 +671,7 @@ void ScCellShell::Execute( SfxRequest& rReq )
                         aRanges.emplace_back(nRow, nRow);
                     }
 
-                    pTabViewShell->SetWidthOrHeight(false, aRanges, 
SC_SIZE_DIRECT, convertMm100ToTwip(nHeight));
+                    pTabViewShell->SetWidthOrHeight(false, aRanges, 
SC_SIZE_DIRECT, o3tl::toTwips(nHeight, o3tl::Length::mm100));
                 }
                 else if ( pReqArgs && pReqArgs->HasItem( FID_ROW_HEIGHT, 
&pHeight ) )
                 {
@@ -679,7 +679,7 @@ void ScCellShell::Execute( SfxRequest& rReq )
 
                     // #101390#; the value of the macro is in HMM so use 
convertMm100ToTwip to convert
                     pTabViewShell->SetMarkedWidthOrHeight( false, 
SC_SIZE_DIRECT,
-                        
sal::static_int_cast<sal_uInt16>(convertMm100ToTwip(nHeight)));
+                        o3tl::toTwips(nHeight, o3tl::Length::mm100));
                     if( ! rReq.IsAPI() )
                         rReq.Done();
                 }
@@ -718,7 +718,7 @@ void ScCellShell::Execute( SfxRequest& rReq )
 
                     // #101390#; the value of the macro is in HMM so use 
convertMm100ToTwip to convert
                     pTabViewShell->SetMarkedWidthOrHeight( false, 
SC_SIZE_OPTIMAL,
-                                    sal::static_int_cast<sal_uInt16>( 
convertMm100ToTwip(rUInt16Item.GetValue()) ) );
+                                    o3tl::toTwips(rUInt16Item.GetValue(), 
o3tl::Length::mm100) );
                     ScGlobal::nLastRowHeightExtra = rUInt16Item.GetValue();
 
                     if( ! rReq.IsAPI() )
@@ -770,7 +770,7 @@ void ScCellShell::Execute( SfxRequest& rReq )
                         aRanges.emplace_back(nColumn, nColumn);
                     }
 
-                    pTabViewShell->SetWidthOrHeight(true, aRanges, 
SC_SIZE_DIRECT, convertMm100ToTwip(nWidth));
+                    pTabViewShell->SetWidthOrHeight(true, aRanges, 
SC_SIZE_DIRECT, o3tl::toTwips(nWidth, o3tl::Length::mm100));
                 }
                 else if ( pReqArgs && pReqArgs->HasItem( FID_COL_WIDTH, 
&pWidth ) )
                 {
@@ -778,7 +778,7 @@ void ScCellShell::Execute( SfxRequest& rReq )
 
                     // #101390#; the value of the macro is in HMM so use 
convertMm100ToTwip to convert
                     pTabViewShell->SetMarkedWidthOrHeight( true, 
SC_SIZE_DIRECT,
-                        
sal::static_int_cast<sal_uInt16>(convertMm100ToTwip(nWidth)));
+                        o3tl::toTwips(nWidth, o3tl::Length::mm100));
                     if( ! rReq.IsAPI() )
                         rReq.Done();
                 }
@@ -815,7 +815,7 @@ void ScCellShell::Execute( SfxRequest& rReq )
 
                     // #101390#; the value of the macro is in HMM so use 
convertMm100ToTwip to convert
                     pTabViewShell->SetMarkedWidthOrHeight( true, 
SC_SIZE_OPTIMAL,
-                                    sal::static_int_cast<sal_uInt16>( 
convertMm100ToTwip(rUInt16Item.GetValue()) ) );
+                                    o3tl::toTwips(rUInt16Item.GetValue(), 
o3tl::Length::mm100) );
                     ScGlobal::nLastColWidthExtra = rUInt16Item.GetValue();
 
                     if( ! rReq.IsAPI() )
diff --git a/sd/qa/unit/tiledrendering/tiledrendering.cxx 
b/sd/qa/unit/tiledrendering/tiledrendering.cxx
index 1bdd4c30386a..156c52f7b066 100644
--- a/sd/qa/unit/tiledrendering/tiledrendering.cxx
+++ b/sd/qa/unit/tiledrendering/tiledrendering.cxx
@@ -465,10 +465,10 @@ void SdTiledRenderingTest::testPostMouseEvent()
     Point aPosition(pCursor->GetPos().getX(), pCursor->GetPos().getY() + 
pCursor->GetSize().Height() / 2);
     aPosition.setX(aPosition.getX() - 1000);
     pXImpressDocument->postMouseEvent(LOK_MOUSEEVENT_MOUSEBUTTONDOWN,
-                                      convertMm100ToTwip(aPosition.getX()), 
convertMm100ToTwip(aPosition.getY()),
+                                      o3tl::toTwips(aPosition.getX(), 
o3tl::Length::mm100), o3tl::toTwips(aPosition.getY(), o3tl::Length::mm100),
                                       1, MOUSE_LEFT, 0);
     pXImpressDocument->postMouseEvent(LOK_MOUSEEVENT_MOUSEBUTTONUP,
-                                      convertMm100ToTwip(aPosition.getX()), 
convertMm100ToTwip(aPosition.getY()),
+                                      o3tl::toTwips(aPosition.getX(), 
o3tl::Length::mm100), o3tl::toTwips(aPosition.getY(), o3tl::Length::mm100),
                                       1, MOUSE_LEFT, 0);
     Scheduler::ProcessEventsToIdle();
     CPPUNIT_ASSERT(pView->GetTextEditObject());
@@ -542,8 +542,8 @@ void SdTiledRenderingTest::testSetGraphicSelection()
     CPPUNIT_ASSERT_EQUAL(int(SdrHdlKind::Lower), 
static_cast<int>(pHdl->GetKind()));
     ::tools::Rectangle aShapeBefore = pObject->GetSnapRect();
     // Resize.
-    pXImpressDocument->setGraphicSelection(LOK_SETGRAPHICSELECTION_START, 
convertMm100ToTwip(pHdl->GetPos().getX()), 
convertMm100ToTwip(pHdl->GetPos().getY()));
-    pXImpressDocument->setGraphicSelection(LOK_SETGRAPHICSELECTION_END, 
convertMm100ToTwip(pHdl->GetPos().getX()), 
convertMm100ToTwip(pHdl->GetPos().getY() + 1000));
+    pXImpressDocument->setGraphicSelection(LOK_SETGRAPHICSELECTION_START, 
o3tl::toTwips(pHdl->GetPos().getX(), o3tl::Length::mm100), 
o3tl::toTwips(pHdl->GetPos().getY(), o3tl::Length::mm100));
+    pXImpressDocument->setGraphicSelection(LOK_SETGRAPHICSELECTION_END, 
o3tl::toTwips(pHdl->GetPos().getX(), o3tl::Length::mm100), 
o3tl::toTwips(pHdl->GetPos().getY() + 1000, o3tl::Length::mm100));
 
     // Assert that view shell ID tracking works.
     sal_Int32 nView1 = SfxLokHelper::getView();
@@ -810,8 +810,8 @@ void SdTiledRenderingTest::testResizeTable()
 
     // Resize the upper row, decrease its height by 1 cm.
     Point aInnerRowEdge = pObject->GetSnapRect().Center();
-    pXImpressDocument->setGraphicSelection(LOK_SETGRAPHICSELECTION_START, 
convertMm100ToTwip(aInnerRowEdge.getX()), 
convertMm100ToTwip(aInnerRowEdge.getY()));
-    pXImpressDocument->setGraphicSelection(LOK_SETGRAPHICSELECTION_END, 
convertMm100ToTwip(aInnerRowEdge.getX()), 
convertMm100ToTwip(aInnerRowEdge.getY() - 1000));
+    pXImpressDocument->setGraphicSelection(LOK_SETGRAPHICSELECTION_START, 
o3tl::toTwips(aInnerRowEdge.getX(), o3tl::Length::mm100), 
o3tl::toTwips(aInnerRowEdge.getY(), o3tl::Length::mm100));
+    pXImpressDocument->setGraphicSelection(LOK_SETGRAPHICSELECTION_END, 
o3tl::toTwips(aInnerRowEdge.getX(), o3tl::Length::mm100), 
o3tl::toTwips(aInnerRowEdge.getY() - 1000, o3tl::Length::mm100));
 
     // Remember the resized row heights.
     sal_Int32 nResizedRow1 = xRow1->getPropertyValue("Size").get<sal_Int32>();
@@ -855,8 +855,8 @@ void SdTiledRenderingTest::testResizeTableColumn()
 
     // Resize the left column, decrease its width by 1 cm.
     Point aInnerRowEdge = pObject->GetSnapRect().Center();
-    pXImpressDocument->setGraphicSelection(LOK_SETGRAPHICSELECTION_START, 
convertMm100ToTwip(aInnerRowEdge.getX()), 
convertMm100ToTwip(aInnerRowEdge.getY()));
-    pXImpressDocument->setGraphicSelection(LOK_SETGRAPHICSELECTION_END, 
convertMm100ToTwip(aInnerRowEdge.getX() - 1000), 
convertMm100ToTwip(aInnerRowEdge.getY()));
+    pXImpressDocument->setGraphicSelection(LOK_SETGRAPHICSELECTION_START, 
o3tl::toTwips(aInnerRowEdge.getX(), o3tl::Length::mm100), 
o3tl::toTwips(aInnerRowEdge.getY(), o3tl::Length::mm100));
+    pXImpressDocument->setGraphicSelection(LOK_SETGRAPHICSELECTION_END, 
o3tl::toTwips(aInnerRowEdge.getX() - 1000, o3tl::Length::mm100), 
o3tl::toTwips(aInnerRowEdge.getY(), o3tl::Length::mm100));
 
     // Remember the resized column widths.
     pXmlDoc = parseXmlDump();
@@ -1131,8 +1131,8 @@ void 
SdTiledRenderingTest::testCursorVisibility_SingleClick()
 
     // Click once outside of the text (in the first quartile) => no editing.
     const ::tools::Rectangle aRect = pTextObject->GetCurrentBoundRect();
-    const auto cornerX = convertMm100ToTwip(aRect.getX() + (aRect.getWidth() / 
4));
-    const auto cornerY = convertMm100ToTwip(aRect.getY() + (aRect.getHeight() 
/ 4));
+    const auto cornerX = o3tl::toTwips(aRect.getX() + (aRect.getWidth() / 4), 
o3tl::Length::mm100);
+    const auto cornerY = o3tl::toTwips(aRect.getY() + (aRect.getHeight() / 4), 
o3tl::Length::mm100);
     pXImpressDocument->postMouseEvent(LOK_MOUSEEVENT_MOUSEBUTTONDOWN,
                                       cornerX, cornerY,
                                       1, MOUSE_LEFT, 0);
@@ -1146,8 +1146,8 @@ void 
SdTiledRenderingTest::testCursorVisibility_SingleClick()
     CPPUNIT_ASSERT(!aView1.m_bCursorVisible);
 
     // Click again, now on the text, in the center, to start editing.
-    const auto centerX = convertMm100ToTwip(aRect.getX() + (aRect.getWidth() / 
2));
-    const auto centerY = convertMm100ToTwip(aRect.getY() + (aRect.getHeight() 
/ 2));
+    const auto centerX = o3tl::toTwips(aRect.getX() + (aRect.getWidth() / 2), 
o3tl::Length::mm100);
+    const auto centerY = o3tl::toTwips(aRect.getY() + (aRect.getHeight() / 2), 
o3tl::Length::mm100);
     pXImpressDocument->postMouseEvent(LOK_MOUSEEVENT_MOUSEBUTTONDOWN,
                                       centerX, centerY,
                                       1, MOUSE_LEFT, 0);
@@ -1180,8 +1180,8 @@ void 
SdTiledRenderingTest::testCursorVisibility_DoubleClick()
 
     // Double-click outside the text to enter edit mode.
     const ::tools::Rectangle aRect = pTextObject->GetCurrentBoundRect();
-    const auto cornerX = convertMm100ToTwip(aRect.getX() + (aRect.getWidth() / 
4));
-    const auto cornerY = convertMm100ToTwip(aRect.getY() + (aRect.getHeight() 
/ 4));
+    const auto cornerX = o3tl::toTwips(aRect.getX() + (aRect.getWidth() / 4), 
o3tl::Length::mm100);
+    const auto cornerY = o3tl::toTwips(aRect.getY() + (aRect.getHeight() / 4), 
o3tl::Length::mm100);
     pXImpressDocument->postMouseEvent(LOK_MOUSEEVENT_MOUSEBUTTONDOWN,
                                       cornerX, cornerY,
                                       2, MOUSE_LEFT, 0);
@@ -1224,8 +1224,8 @@ void 
SdTiledRenderingTest::testCursorVisibility_MultiView()
     SfxLokHelper::setView(nView1);
 
     ::tools::Rectangle aRect = pTextObject->GetCurrentBoundRect();
-    const auto centerX = convertMm100ToTwip(aRect.getX() + (aRect.getWidth() / 
2));
-    const auto centerY = convertMm100ToTwip(aRect.getY() + (aRect.getHeight() 
/ 2));
+    const auto centerX = o3tl::toTwips(aRect.getX() + (aRect.getWidth() / 2), 
o3tl::Length::mm100);
+    const auto centerY = o3tl::toTwips(aRect.getY() + (aRect.getHeight() / 2), 
o3tl::Length::mm100);
     pXImpressDocument->postMouseEvent(LOK_MOUSEEVENT_MOUSEBUTTONDOWN,
                                       centerX, centerY,
                                       2, MOUSE_LEFT, 0);
@@ -1260,8 +1260,8 @@ void SdTiledRenderingTest::testCursorVisibility_Escape()
 
     // Click once on the text to start editing.
     const ::tools::Rectangle aRect = pTextObject->GetCurrentBoundRect();
-    const auto centerX = convertMm100ToTwip(aRect.getX() + (aRect.getWidth() / 
2));
-    const auto centerY = convertMm100ToTwip(aRect.getY() + (aRect.getHeight() 
/ 2));
+    const auto centerX = o3tl::toTwips(aRect.getX() + (aRect.getWidth() / 2), 
o3tl::Length::mm100);
+    const auto centerY = o3tl::toTwips(aRect.getY() + (aRect.getHeight() / 2), 
o3tl::Length::mm100);
     pXImpressDocument->postMouseEvent(LOK_MOUSEEVENT_MOUSEBUTTONDOWN,
                                       centerX, centerY,
                                       1, MOUSE_LEFT, 0);
@@ -1441,10 +1441,10 @@ void SdTiledRenderingTest::testTdf102223()
     // select contents of cell
     ::tools::Rectangle aRect = pTableObject->GetCurrentBoundRect();
     pXImpressDocument->postMouseEvent(LOK_MOUSEEVENT_MOUSEBUTTONDOWN,
-                                      convertMm100ToTwip(aRect.getX() + 2), 
convertMm100ToTwip(aRect.getY() + 2),
+                                      o3tl::toTwips(aRect.getX() + 2, 
o3tl::Length::mm100), o3tl::toTwips(aRect.getY() + 2, o3tl::Length::mm100),
                                       1, MOUSE_LEFT, 0);
     pXImpressDocument->postMouseEvent(LOK_MOUSEEVENT_MOUSEBUTTONUP,
-                                      convertMm100ToTwip(aRect.getX() + 2), 
convertMm100ToTwip(aRect.getY() + 2),
+                                      o3tl::toTwips(aRect.getX() + 2, 
o3tl::Length::mm100), o3tl::toTwips(aRect.getY() + 2, o3tl::Length::mm100),
                                       1, MOUSE_LEFT, 0);
     Scheduler::ProcessEventsToIdle();
     pView->SdrBeginTextEdit(pTableObject);
@@ -1484,10 +1484,10 @@ void SdTiledRenderingTest::testTdf118354()
     // Without the fix, it would crash here
     ::tools::Rectangle aRect = pTableObject->GetCurrentBoundRect();
     pXImpressDocument->postMouseEvent(LOK_MOUSEEVENT_MOUSEBUTTONDOWN,
-                                      convertMm100ToTwip(aRect.getX() + 2), 
convertMm100ToTwip(aRect.getY() + 2),
+                                      o3tl::toTwips(aRect.getX() + 2, 
o3tl::Length::mm100), o3tl::toTwips(aRect.getY() + 2, o3tl::Length::mm100),
                                       1, MOUSE_LEFT, 0);
     pXImpressDocument->postMouseEvent(LOK_MOUSEEVENT_MOUSEBUTTONUP,
-                                      convertMm100ToTwip(aRect.getX() + 2), 
convertMm100ToTwip(aRect.getY() + 2),
+                                      o3tl::toTwips(aRect.getX() + 2, 
o3tl::Length::mm100), o3tl::toTwips(aRect.getY() + 2, o3tl::Length::mm100),
                                       1, MOUSE_LEFT, 0);
     Scheduler::ProcessEventsToIdle();
 
@@ -1554,10 +1554,10 @@ void SdTiledRenderingTest::testTdf103083()
     // select contents of bullet item
     ::tools::Rectangle aRect = pTextObject->GetCurrentBoundRect();
     pXImpressDocument->postMouseEvent(LOK_MOUSEEVENT_MOUSEBUTTONDOWN,
-                                      convertMm100ToTwip(aRect.getX() + 2), 
convertMm100ToTwip(aRect.getY() + 2),
+                                      o3tl::toTwips(aRect.getX() + 2, 
o3tl::Length::mm100), o3tl::toTwips(aRect.getY() + 2, o3tl::Length::mm100),
                                       1, MOUSE_LEFT, 0);
     pXImpressDocument->postMouseEvent(LOK_MOUSEEVENT_MOUSEBUTTONUP,
-                                      convertMm100ToTwip(aRect.getX() + 2), 
convertMm100ToTwip(aRect.getY() + 2),
+                                      o3tl::toTwips(aRect.getX() + 2, 
o3tl::Length::mm100), o3tl::toTwips(aRect.getY() + 2, o3tl::Length::mm100),
                                       1, MOUSE_LEFT, 0);
     Scheduler::ProcessEventsToIdle();
     pView->SdrBeginTextEdit(pTextObject);
@@ -1643,10 +1643,10 @@ void SdTiledRenderingTest::testTdf104405()
     rEditView2.SetSelection(ESelection(0, 0, 0, 3)); // start para, start 
char, end para, end char.
     ::tools::Rectangle aRect = pTableObject->GetCurrentBoundRect();
     pXImpressDocument->postMouseEvent(LOK_MOUSEEVENT_MOUSEBUTTONDOWN,
-                                      convertMm100ToTwip(aRect.getX()), 
convertMm100ToTwip(aRect.getY()),
+                                      o3tl::toTwips(aRect.getX(), 
o3tl::Length::mm100), o3tl::toTwips(aRect.getY(), o3tl::Length::mm100),
                                       1, MOUSE_LEFT, 0);
     pXImpressDocument->postMouseEvent(LOK_MOUSEEVENT_MOUSEBUTTONUP,
-                                      convertMm100ToTwip(aRect.getX()), 
convertMm100ToTwip(aRect.getY()),
+                                      o3tl::toTwips(aRect.getX(), 
o3tl::Length::mm100), o3tl::toTwips(aRect.getY(), o3tl::Length::mm100),
                                       1, MOUSE_LEFT, 0);
 
     Scheduler::ProcessEventsToIdle();
@@ -2025,8 +2025,8 @@ void 
SdTiledRenderingTest::testMultiViewInsertDeletePage2()
 
     // Double-click outside the text to enter edit mode.
     const ::tools::Rectangle aRect = pTextObject->GetCurrentBoundRect();
-    const auto cornerX = convertMm100ToTwip(aRect.getX() + (aRect.getWidth() / 
4));
-    const auto cornerY = convertMm100ToTwip(aRect.getY() + (aRect.getHeight() 
/ 4));
+    const auto cornerX = o3tl::toTwips(aRect.getX() + (aRect.getWidth() / 4), 
o3tl::Length::mm100);
+    const auto cornerY = o3tl::toTwips(aRect.getY() + (aRect.getHeight() / 4), 
o3tl::Length::mm100);
     pXImpressDocument->postMouseEvent(LOK_MOUSEEVENT_MOUSEBUTTONDOWN,
                                       cornerX, cornerY,
                                       2, MOUSE_LEFT, 0);
diff --git a/sd/source/ui/unoidl/unomodel.cxx b/sd/source/ui/unoidl/unomodel.cxx
index 91c9254eb39a..e44ee53a7899 100644
--- a/sd/source/ui/unoidl/unomodel.cxx
+++ b/sd/source/ui/unoidl/unomodel.cxx
@@ -2386,7 +2386,7 @@ Size SdXImpressDocument::getDocumentSize()
     Size aSize = pCurPageView->GetPageRect().GetSize();
     // Convert the size in 100th mm to TWIP
     // See paintTile above for further info.
-    return Size(convertMm100ToTwip(aSize.getWidth()), 
convertMm100ToTwip(aSize.getHeight()));
+    return o3tl::convert(aSize, o3tl::Length::mm100, o3tl::Length::twip);
 }
 
 void SdXImpressDocument::getPostIts(::tools::JsonWriter& rJsonWriter)
diff --git a/svl/source/items/ptitem.cxx b/svl/source/items/ptitem.cxx
index 407627dcb27e..361cb4f4fc7d 100644
--- a/svl/source/items/ptitem.cxx
+++ b/svl/source/items/ptitem.cxx
@@ -107,15 +107,15 @@ bool SfxPointItem::PutValue( const uno::Any& rVal,
         bRet = ( rVal >>= aValue );
         if( bConvert )
         {
-            aValue.X = convertMm100ToTwip(aValue.X);
-            aValue.Y = convertMm100ToTwip(aValue.Y);
+            aValue.X = o3tl::toTwips(aValue.X, o3tl::Length::mm100);
+            aValue.Y = o3tl::toTwips(aValue.Y, o3tl::Length::mm100);
         }
     }
     else
     {
         bRet = ( rVal >>= nVal );
         if( bConvert )
-            nVal = convertMm100ToTwip( nVal );
+            nVal = o3tl::toTwips(nVal, o3tl::Length::mm100);
     }
 
     if ( bRet )
diff --git a/svx/source/dialog/rulritem.cxx b/svx/source/dialog/rulritem.cxx
index c9973fdd7462..830475293402 100644
--- a/svx/source/dialog/rulritem.cxx
+++ b/svx/source/dialog/rulritem.cxx
@@ -90,15 +90,15 @@ bool SvxLongLRSpaceItem::PutValue( const css::uno::Any& 
rVal, sal_uInt8 nMemberI
         css::frame::status::LeftRightMargin aLeftRightMargin;
         if ( rVal >>= aLeftRightMargin )
         {
-            mlLeft  = bConvert ? convertMm100ToTwip(aLeftRightMargin.Left) : 
aLeftRightMargin.Left;
-            mlRight = bConvert ? convertMm100ToTwip(aLeftRightMargin.Right) : 
aLeftRightMargin.Right;
+            mlLeft  = bConvert ? o3tl::toTwips(aLeftRightMargin.Left, 
o3tl::Length::mm100) : aLeftRightMargin.Left;
+            mlRight = bConvert ? o3tl::toTwips(aLeftRightMargin.Right, 
o3tl::Length::mm100) : aLeftRightMargin.Right;
             return true;
         }
     }
     else if ( rVal >>= nVal )
     {
         if ( bConvert )
-            nVal = convertMm100ToTwip( nVal );
+            nVal = o3tl::toTwips(nVal, o3tl::Length::mm100);
 
         switch( nMemberId )
         {
@@ -209,15 +209,15 @@ bool SvxLongULSpaceItem::PutValue( const css::uno::Any& 
rVal, sal_uInt8 nMemberI
         css::frame::status::UpperLowerMargin aUpperLowerMargin;
         if ( rVal >>= aUpperLowerMargin )
         {
-            mlLeft    = bConvert ? convertMm100ToTwip( aUpperLowerMargin.Upper 
) : aUpperLowerMargin.Upper;
-            mlRight   = bConvert ? convertMm100ToTwip( aUpperLowerMargin.Lower 
) : aUpperLowerMargin.Lower;
+            mlLeft    = bConvert ? o3tl::toTwips(aUpperLowerMargin.Upper, 
o3tl::Length::mm100) : aUpperLowerMargin.Upper;
+            mlRight   = bConvert ? o3tl::toTwips(aUpperLowerMargin.Lower, 
o3tl::Length::mm100) : aUpperLowerMargin.Lower;
             return true;
         }
     }
     else if ( rVal >>= nVal )
     {
         if ( bConvert )
-            nVal = convertMm100ToTwip( nVal );
+            nVal = o3tl::toTwips(nVal, o3tl::Length::mm100);
 
         switch( nMemberId )
         {
diff --git a/svx/source/items/algitem.cxx b/svx/source/items/algitem.cxx
index 470096993f47..96783e822ef5 100644
--- a/svx/source/items/algitem.cxx
+++ b/svx/source/items/algitem.cxx
@@ -269,16 +269,16 @@ bool SvxMarginItem::PutValue( const uno::Any& rVal, 
sal_uInt8 nMemberId )
     switch ( nMemberId & ~CONVERT_TWIPS )
     {
         case MID_MARGIN_L_MARGIN:
-            nLeftMargin = static_cast<sal_Int16>( bConvert ? 
convertMm100ToTwip(nVal) : nVal );
+            nLeftMargin = static_cast<sal_Int16>( bConvert ? 
o3tl::toTwips(nVal, o3tl::Length::mm100) : nVal );
             break;
         case MID_MARGIN_R_MARGIN:
-            nRightMargin = static_cast<sal_Int16>( bConvert ? 
convertMm100ToTwip(nVal) : nVal );
+            nRightMargin = static_cast<sal_Int16>( bConvert ? 
o3tl::toTwips(nVal, o3tl::Length::mm100) : nVal );
             break;
         case MID_MARGIN_UP_MARGIN:
-            nTopMargin = static_cast<sal_Int16>( bConvert ? 
convertMm100ToTwip(nVal) : nVal );
+            nTopMargin = static_cast<sal_Int16>( bConvert ? 
o3tl::toTwips(nVal, o3tl::Length::mm100) : nVal );
             break;
         case MID_MARGIN_LO_MARGIN:
-            nBottomMargin = static_cast<sal_Int16>( bConvert ? 
convertMm100ToTwip(nVal) : nVal );
+            nBottomMargin = static_cast<sal_Int16>( bConvert ? 
o3tl::toTwips(nVal, o3tl::Length::mm100) : nVal );
             break;
         default:
             OSL_FAIL("unknown MemberId");
diff --git a/svx/source/items/grfitem.cxx b/svx/source/items/grfitem.cxx
index 2c0b678fbd3c..b241738f313f 100644
--- a/svx/source/items/grfitem.cxx
+++ b/svx/source/items/grfitem.cxx
@@ -83,10 +83,10 @@ bool SvxGrfCrop::PutValue( const uno::Any& rVal, sal_uInt8 
nMemberId )
         return false;
     if( bConvert )
     {
-       aVal.Right   = convertMm100ToTwip(aVal.Right );
-       aVal.Top     = convertMm100ToTwip(aVal.Top );
-       aVal.Left    = convertMm100ToTwip(aVal.Left   );
-       aVal.Bottom  = convertMm100ToTwip(aVal.Bottom);
+       aVal.Right   = o3tl::toTwips(aVal.Right, o3tl::Length::mm100);
+       aVal.Top     = o3tl::toTwips(aVal.Top, o3tl::Length::mm100);
+       aVal.Left    = o3tl::toTwips(aVal.Left, o3tl::Length::mm100);
+       aVal.Bottom  = o3tl::toTwips(aVal.Bottom, o3tl::Length::mm100);
     }
 
     nLeft   = aVal.Left  ;
diff --git a/svx/source/table/svdotable.cxx b/svx/source/table/svdotable.cxx
index f460a8a10f59..10cfaa28808b 100644
--- a/svx/source/table/svdotable.cxx
+++ b/svx/source/table/svdotable.cxx
@@ -2461,7 +2461,7 @@ bool 
SdrTableObj::createTableEdgesJson(boost::property_tree::ptree & rJsonRoot)
     tools::Rectangle aRect = GetCurrentBoundRect();
     boost::property_tree::ptree aTableColumns;
     {
-        aTableColumns.put("tableOffset", convertMm100ToTwip(aRect.Left()));
+        aTableColumns.put("tableOffset", o3tl::toTwips(aRect.Left(), 
o3tl::Length::mm100));
 
         boost::property_tree::ptree aEntries;
         auto const & aEdges = mpImpl->mpLayouter->getVerticalEdges();
@@ -2469,18 +2469,18 @@ bool 
SdrTableObj::createTableEdgesJson(boost::property_tree::ptree & rJsonRoot)
         {
             if (rEdge.nIndex == 0)
             {
-                aTableColumns.put("left", convertMm100ToTwip(rEdge.nPosition));
+                aTableColumns.put("left", o3tl::toTwips(rEdge.nPosition, 
o3tl::Length::mm100));
             }
             else if (rEdge.nIndex == sal_Int32(aEdges.size() - 1))
             {
-                aTableColumns.put("right", 
convertMm100ToTwip(rEdge.nPosition));
+                aTableColumns.put("right", o3tl::toTwips(rEdge.nPosition, 
o3tl::Length::mm100));
             }
             else
             {
                 boost::property_tree::ptree aEntry;
-                aEntry.put("position", convertMm100ToTwip(rEdge.nPosition));
-                aEntry.put("min", convertMm100ToTwip(rEdge.nPosition + 
rEdge.nMin));
-                aEntry.put("max", convertMm100ToTwip(rEdge.nPosition + 
rEdge.nMax));
+                aEntry.put("position", o3tl::toTwips(rEdge.nPosition, 
o3tl::Length::mm100));
+                aEntry.put("min", o3tl::toTwips(rEdge.nPosition + rEdge.nMin, 
o3tl::Length::mm100));
+                aEntry.put("max", o3tl::toTwips(rEdge.nPosition + rEdge.nMax, 
o3tl::Length::mm100));
                 aEntry.put("hidden", false);
                 aEntries.push_back(std::make_pair("", aEntry));
             }
@@ -2491,7 +2491,7 @@ bool 
SdrTableObj::createTableEdgesJson(boost::property_tree::ptree & rJsonRoot)
 
     boost::property_tree::ptree aTableRows;
     {
-        aTableRows.put("tableOffset", convertMm100ToTwip(aRect.Top()));
+        aTableRows.put("tableOffset", o3tl::toTwips(aRect.Top(), 
o3tl::Length::mm100));
 
         boost::property_tree::ptree aEntries;
         auto const & aEdges = mpImpl->mpLayouter->getHorizontalEdges();
@@ -2499,18 +2499,18 @@ bool 
SdrTableObj::createTableEdgesJson(boost::property_tree::ptree & rJsonRoot)
         {
             if (rEdge.nIndex == 0)
             {
-                aTableRows.put("left", convertMm100ToTwip(rEdge.nPosition));
+                aTableRows.put("left", o3tl::toTwips(rEdge.nPosition, 
o3tl::Length::mm100));
             }
             else if (rEdge.nIndex == sal_Int32(aEdges.size() - 1))
             {
-                aTableRows.put("right", convertMm100ToTwip(rEdge.nPosition));
+                aTableRows.put("right", o3tl::toTwips(rEdge.nPosition, 
o3tl::Length::mm100));
             }
             else
             {
                 boost::property_tree::ptree aEntry;
-                aEntry.put("position", convertMm100ToTwip(rEdge.nPosition));
-                aEntry.put("min", convertMm100ToTwip(rEdge.nPosition + 
rEdge.nMin));
-                aEntry.put("max", convertMm100ToTwip(rEdge.nPosition + 
rEdge.nMax));
+                aEntry.put("position", o3tl::toTwips(rEdge.nPosition, 
o3tl::Length::mm100));
+                aEntry.put("min", o3tl::toTwips(rEdge.nPosition + rEdge.nMin, 
o3tl::Length::mm100));
+                aEntry.put("max", o3tl::toTwips(rEdge.nPosition + rEdge.nMax, 
o3tl::Length::mm100));
                 aEntry.put("hidden", false);
                 aEntries.push_back(std::make_pair("", aEntry));
             }
diff --git a/svx/source/table/tablertfexporter.cxx 
b/svx/source/table/tablertfexporter.cxx
index 135693ea67b0..b131fa09bf3c 100644
--- a/svx/source/table/tablertfexporter.cxx
+++ b/svx/source/table/tablertfexporter.cxx
@@ -96,7 +96,7 @@ void SdrTableRtfExporter::Write()
         Reference< XPropertySet > xSet( xColumns->getByIndex(nCol), 
UNO_QUERY_THROW );
         sal_Int32 nWidth = 0;
         xSet->getPropertyValue( gsSize ) >>= nWidth;
-        nPos += convertMm100ToTwip(nWidth);
+        nPos += o3tl::toTwips(nWidth, o3tl::Length::mm100);
         aColumnStart.push_back( nPos );
     }
     catch( Exception& )
diff --git a/svx/source/unodraw/SvxXTextColumns.cxx 
b/svx/source/unodraw/SvxXTextColumns.cxx
index a98e0f9cf8a0..ee0fa10fa1d4 100644
--- a/svx/source/unodraw/SvxXTextColumns.cxx
+++ b/svx/source/unodraw/SvxXTextColumns.cxx
@@ -209,7 +209,7 @@ void SvxXTextColumns::setPropertyValue(const OUString& 
rPropertyName, const css:
             if (sal_Int32 nTmp; !(aValue >>= nTmp) || nTmp < 0)
                 throw css::lang::IllegalArgumentException();
             else
-                m_nSepLineWidth = convertMm100ToTwip(nTmp);
+                m_nSepLineWidth = o3tl::toTwips(nTmp, o3tl::Length::mm100);
             break;
         case WID_TXTCOL_LINE_COLOR:
             if (!(aValue >>= m_nSepLineColor))
diff --git a/svx/source/xoutdev/xattr.cxx b/svx/source/xoutdev/xattr.cxx
index fe9c280a62b2..0707a485c5de 100644
--- a/svx/source/xoutdev/xattr.cxx
+++ b/svx/source/xoutdev/xattr.cxx
@@ -931,7 +931,7 @@ bool XLineWidthItem::PutValue( const css::uno::Any& rVal, 
sal_uInt8 nMemberId )
     sal_Int32 nValue = 0;
     rVal >>= nValue;
     if( 0 != (nMemberId&CONVERT_TWIPS) )
-        nValue = convertMm100ToTwip(nValue);
+        nValue = o3tl::toTwips(nValue, o3tl::Length::mm100);
 
     SetValue( nValue );
     return true;
diff --git a/sw/qa/core/layout/layout.cxx b/sw/qa/core/layout/layout.cxx
index 92c195a9681d..77d8f66e1109 100644
--- a/sw/qa/core/layout/layout.cxx
+++ b/sw/qa/core/layout/layout.cxx
@@ -297,7 +297,7 @@ CPPUNIT_TEST_FIXTURE(SwCoreLayoutTest, testGutterMargin)
 
     // Verify that the new left edge is larger.
     tools::Long nNewLeft = pPage->getFramePrintArea().Left();
-    tools::Long nGutterTwips = convertMm100ToTwip(nGutterMm100);
+    tools::Long nGutterTwips = o3tl::toTwips(nGutterMm100, 
o3tl::Length::mm100);
     // Without the accompanying fix in place, this test would have failed with:
     // - Expected: 1134
     // - Actual  : 0
@@ -326,7 +326,7 @@ CPPUNIT_TEST_FIXTURE(SwCoreLayoutTest, testGutterTopMargin)
 
     // Verify that the new top edge is larger.
     tools::Long nNewTop = pPage->getFramePrintArea().Top();
-    tools::Long nGutterTwips = convertMm100ToTwip(nGutterMm100);
+    tools::Long nGutterTwips = o3tl::toTwips(nGutterMm100, 
o3tl::Length::mm100);
     // Without the accompanying fix in place, this test would have failed with:
     // - Expected: 1134
     // - Actual  : 0
@@ -353,7 +353,7 @@ CPPUNIT_TEST_FIXTURE(SwCoreLayoutTest, 
testGutterMirrorMargin)
     xStandard->setPropertyValue("GutterMargin", uno::makeAny(nGutterMm100));
 
     tools::Long nNewLeft = pPage->getFramePrintArea().Left();
-    tools::Long nGutterTwips = convertMm100ToTwip(nGutterMm100);
+    tools::Long nGutterTwips = o3tl::toTwips(nGutterMm100, 
o3tl::Length::mm100);
     CPPUNIT_ASSERT_EQUAL(nGutterTwips, nNewLeft - nOldLeft);
     tools::Long nNewRight = pPage2->getFramePrintArea().Right();
     // Without the accompanying fix in place, this test would have failed with:
@@ -380,7 +380,7 @@ CPPUNIT_TEST_FIXTURE(SwCoreLayoutTest, testRtlGutterMargin)
 
     // Then make sure the new right edge of the print area is decreased:
     tools::Long nNewRight = pPage->getFramePrintArea().Right();
-    tools::Long nGutterTwips = convertMm100ToTwip(nGutterMm100);
+    tools::Long nGutterTwips = o3tl::toTwips(nGutterMm100, 
o3tl::Length::mm100);
     // Without the accompanying fix in place, this test would have failed with:
     // - Expected: 1134
     // - Actual  : 0
diff --git a/sw/qa/extras/rtfimport/rtfimport.cxx 
b/sw/qa/extras/rtfimport/rtfimport.cxx
index ae99eab0d49a..d946aba364e2 100644
--- a/sw/qa/extras/rtfimport/rtfimport.cxx
+++ b/sw/qa/extras/rtfimport/rtfimport.cxx
@@ -1575,8 +1575,8 @@ CPPUNIT_TEST_FIXTURE(Test, testDefaultValues)
     CPPUNIT_ASSERT_EQUAL(double(12), getProperty<double>(run, "CharHeight"));
     CPPUNIT_ASSERT_EQUAL(sal_Int32(0), getProperty<sal_Int32>(run, 
"CharEscapement"));
     CPPUNIT_ASSERT_EQUAL(sal_Int32(100), getProperty<sal_Int32>(run, 
"CharEscapementHeight"));
-    CPPUNIT_ASSERT_EQUAL(sal_Int64(20),
-                         convertMm100ToTwip(getProperty<sal_Int16>(run, 
"CharKerning")));
+    CPPUNIT_ASSERT_EQUAL(sal_Int64(20), 
o3tl::toTwips(getProperty<sal_Int16>(run, "CharKerning"),
+                                                      o3tl::Length::mm100));
     CPPUNIT_ASSERT_EQUAL(sal_Int32(COL_AUTO), getProperty<sal_Int32>(run, 
"CharColor"));
 
     run = getRun(paragraph, 8, "expand0pt");
@@ -1592,8 +1592,8 @@ CPPUNIT_TEST_FIXTURE(Test, testDefaultValues)
     CPPUNIT_ASSERT_EQUAL(double(12), getProperty<double>(run, "CharHeight"));
     CPPUNIT_ASSERT_EQUAL(sal_Int32(0), getProperty<sal_Int32>(run, 
"CharEscapement"));
     CPPUNIT_ASSERT_EQUAL(sal_Int32(100), getProperty<sal_Int32>(run, 
"CharEscapementHeight"));
-    CPPUNIT_ASSERT_EQUAL(sal_Int64(20),
-                         convertMm100ToTwip(getProperty<sal_Int16>(run, 
"CharKerning")));
+    CPPUNIT_ASSERT_EQUAL(sal_Int64(20), 
o3tl::toTwips(getProperty<sal_Int16>(run, "CharKerning"),
+                                                      o3tl::Length::mm100));
     CPPUNIT_ASSERT_EQUAL(sal_Int32(COL_AUTO), getProperty<sal_Int32>(run, 
"CharColor"));
 
     run = getRun(paragraph, 10, "expand0pt");
diff --git a/sw/source/core/draw/dflyobj.cxx b/sw/source/core/draw/dflyobj.cxx
index fcb598966280..1d51efc07ce6 100644
--- a/sw/source/core/draw/dflyobj.cxx
+++ b/sw/source/core/draw/dflyobj.cxx
@@ -898,10 +898,10 @@ void SwVirtFlyDrawObj::NbcCrop(const basegfx::B2DPoint& 
rRef, double fxFact, dou
     // pSh->StartUndo(SwUndoId::START);
 
     // Set new crop values in twips
-    aCrop.SetLeft  (convertMm100ToTwip(nLeftCrop));
-    aCrop.SetTop   (convertMm100ToTwip(nTopCrop));
-    aCrop.SetRight (convertMm100ToTwip(nRightCrop));
-    aCrop.SetBottom(convertMm100ToTwip(nBottomCrop));
+    aCrop.SetLeft  (o3tl::toTwips(nLeftCrop, o3tl::Length::mm100));
+    aCrop.SetTop   (o3tl::toTwips(nTopCrop, o3tl::Length::mm100));
+    aCrop.SetRight (o3tl::toTwips(nRightCrop, o3tl::Length::mm100));
+    aCrop.SetBottom(o3tl::toTwips(nBottomCrop, o3tl::Length::mm100));
     pSh->SetAttrItem(aCrop);
 
     // Set new frame size
diff --git a/sw/source/core/inc/rootfrm.hxx b/sw/source/core/inc/rootfrm.hxx
index 6e79b4aa941d..244d935bceb1 100644
--- a/sw/source/core/inc/rootfrm.hxx
+++ b/sw/source/core/inc/rootfrm.hxx
@@ -107,7 +107,7 @@ class SW_DLLPUBLIC SwRootFrame final : public SwLayoutFrame
     static bool           s_isNoVirDev;// No virt. Device for SystemPaints
 
     /// Width of the HTML / Web document if not defined otherwise: 20cm.
-    static constexpr sal_Int64 MIN_BROWSE_WIDTH = convertMm100ToTwip(20000);
+    static constexpr sal_Int64 MIN_BROWSE_WIDTH = o3tl::toTwips(20000, 
o3tl::Length::mm100);
 
     bool    mbCheckSuperfluous   :1; // Search for empty Pages?
     bool    mbIdleFormat         :1; // Trigger Idle Formatter?
diff --git a/sw/source/core/layout/atrfrm.cxx b/sw/source/core/layout/atrfrm.cxx
index 9181f970ea18..711957cea1f2 100644
--- a/sw/source/core/layout/atrfrm.cxx
+++ b/sw/source/core/layout/atrfrm.cxx
@@ -326,8 +326,8 @@ bool SwFormatFrameSize::PutValue( const uno::Any& rVal, 
sal_uInt8 nMemberId )
                 Size aTmp(aVal.Width, aVal.Height);
                 if(bConvert)
                 {
-                    aTmp.setHeight( convertMm100ToTwip(aTmp.Height()) );
-                    aTmp.setWidth( convertMm100ToTwip(aTmp.Width()) );
+                    aTmp.setHeight(o3tl::toTwips(aTmp.Height(), 
o3tl::Length::mm100));
+                    aTmp.setWidth(o3tl::toTwips(aTmp.Width(), 
o3tl::Length::mm100));
                 }
                 SetSize(aTmp);
             }
@@ -391,7 +391,7 @@ bool SwFormatFrameSize::PutValue( const uno::Any& rVal, 
sal_uInt8 nMemberId )
             if(rVal >>= nWd)
             {
                 if(bConvert)
-                    nWd = convertMm100ToTwip(nWd);
+                    nWd = o3tl::toTwips(nWd, o3tl::Length::mm100);
                 if(nWd < MINLAY)
                    nWd = MINLAY;
                 SetWidth(nWd);
@@ -406,7 +406,7 @@ bool SwFormatFrameSize::PutValue( const uno::Any& rVal, 
sal_uInt8 nMemberId )
             if(rVal >>= nHg)
             {
                 if(bConvert)
-                    nHg = convertMm100ToTwip(nHg);
+                    nHg = o3tl::toTwips(nHg, o3tl::Length::mm100);
                 if(nHg < MINLAY)
                     nHg = MINLAY;
                 SetHeight(nHg);
@@ -1189,8 +1189,8 @@ bool SwFormatCol::PutValue( const uno::Any& rVal, 
sal_uInt8 nMemberId )
                     SwColumn aCol;
                     aCol.SetWishWidth(pArray[i].Width );
                     nWidthSum = nWidthSum + pArray[i].Width;
-                    aCol.SetLeft (convertMm100ToTwip(pArray[i].LeftMargin));
-                    aCol.SetRight(convertMm100ToTwip(pArray[i].RightMargin));
+                    aCol.SetLeft (o3tl::toTwips(pArray[i].LeftMargin, 
o3tl::Length::mm100));
+                    aCol.SetRight(o3tl::toTwips(pArray[i].RightMargin, 
o3tl::Length::mm100));
                     m_aColumns.insert(m_aColumns.begin() + i, aCol);
                 }
             bRet = true;
@@ -1433,7 +1433,7 @@ bool SwFormatVertOrient::PutValue( const uno::Any& rVal, 
sal_uInt8 nMemberId )
             sal_Int32 nVal = 0;
             rVal >>= nVal;
             if(bConvert)
-                nVal = convertMm100ToTwip(nVal);
+                nVal = o3tl::toTwips(nVal, o3tl::Length::mm100);
             SetPos( nVal );
         }
         break;
@@ -1531,7 +1531,7 @@ bool SwFormatHoriOrient::PutValue( const uno::Any& rVal, 
sal_uInt8 nMemberId )
             if(!(rVal >>= nVal))
                 bRet = false;
             if(bConvert)
-                nVal = convertMm100ToTwip(nVal);
+                nVal = o3tl::toTwips(nVal, o3tl::Length::mm100);
             SetPos( nVal );
         }
         break;
@@ -2380,7 +2380,7 @@ bool SwTextGridItem::PutValue( const uno::Any& rVal, 
sal_uInt8 nMemberId )
                         "This value needs TWIPS-MM100 conversion" );
             sal_Int32 nTmp = 0;
             bRet = (rVal >>= nTmp);
-            nTmp = convertMm100ToTwip( nTmp );
+            nTmp = o3tl::toTwips(nTmp, o3tl::Length::mm100);
             if( bRet && (nTmp >= 0) && ( nTmp <= SAL_MAX_UINT16) )
             {
                 // rhbz#1043551 round up to 5pt -- 0 causes divide-by-zero
diff --git a/sw/source/core/para/paratr.cxx b/sw/source/core/para/paratr.cxx
index b8c6e668b01a..f724ac21c0fe 100644
--- a/sw/source/core/para/paratr.cxx
+++ b/sw/source/core/para/paratr.cxx
@@ -147,7 +147,7 @@ bool SwFormatDrop::PutValue( const uno::Any& rVal, 
sal_uInt8 nMemberId )
         {
             sal_Int16 nVal = 0;
             if ( rVal >>= nVal )
-                m_nDistance = 
static_cast<sal_Int16>(convertMm100ToTwip(static_cast<sal_Int32>(nVal)));
+                m_nDistance = o3tl::toTwips(nVal, o3tl::Length::mm100);
             else
                 return false;
             break;
@@ -159,7 +159,7 @@ bool SwFormatDrop::PutValue( const uno::Any& rVal, 
sal_uInt8 nMemberId )
                 auto pDrop = o3tl::doAccess<style::DropCapFormat>(rVal);
                 m_nLines      = pDrop->Lines;
                 m_nChars      = pDrop->Count;
-                m_nDistance   = convertMm100ToTwip(pDrop->Distance);
+                m_nDistance   = o3tl::toTwips(pDrop->Distance, 
o3tl::Length::mm100);
             }
         }
         break;
diff --git a/sw/source/core/unocore/unodraw.cxx 
b/sw/source/core/unocore/unodraw.cxx
index c47887f8350d..221f47fca29a 100644
--- a/sw/source/core/unocore/unodraw.cxx
+++ b/sw/source/core/unocore/unodraw.cxx
@@ -619,7 +619,7 @@ void SwXDrawPage::add(const uno::Reference< drawing::XShape 
> & xShape)
         if ( !pDesc->GetHOrient() )
         {
             SwFormatHoriOrient* pHori = pDesc->GetHOrient( true );
-            SwTwips nHoriPos = convertMm100ToTwip(aMM100Pos.X);
+            SwTwips nHoriPos = o3tl::toTwips(aMM100Pos.X, o3tl::Length::mm100);
             pHori->SetPos( nHoriPos );
         }
         {
@@ -631,7 +631,7 @@ void SwXDrawPage::add(const uno::Reference< drawing::XShape 
> & xShape)
         if ( !pDesc->GetVOrient() )
         {
             SwFormatVertOrient* pVert = pDesc->GetVOrient( true );
-            SwTwips nVertPos = convertMm100ToTwip(aMM100Pos.Y);
+            SwTwips nVertPos = o3tl::toTwips(aMM100Pos.Y, o3tl::Length::mm100);
             pVert->SetPos( nVertPos );
         }
         {
@@ -689,7 +689,7 @@ void SwXDrawPage::add(const uno::Reference< drawing::XShape 
> & xShape)
     else if ((aAnchor.GetAnchorId() != RndStdIds::FLY_AT_PAGE) && 
m_pDoc->getIDocumentLayoutAccess().GetCurrentLayout())
     {
         SwCursorMoveState aState( CursorMoveState::SetOnlyText );
-        Point aTmp(convertMm100ToTwip(aMM100Pos.X), 
convertMm100ToTwip(aMM100Pos.Y));
+        Point aTmp(o3tl::toTwips(aMM100Pos.X, o3tl::Length::mm100), 
o3tl::toTwips(aMM100Pos.Y, o3tl::Length::mm100));
         
m_pDoc->getIDocumentLayoutAccess().GetCurrentLayout()->GetModelPositionForViewPoint(
 pPam->GetPoint(), aTmp, &aState );
         aAnchor.SetAnchor( pPam->GetPoint() );
 
diff --git a/sw/source/core/unocore/unoidx.cxx 
b/sw/source/core/unocore/unoidx.cxx
index b71d108b9cf6..58aba6aef78c 100644
--- a/sw/source/core/unocore/unoidx.cxx
+++ b/sw/source/core/unocore/unoidx.cxx
@@ -2728,7 +2728,7 @@ SwXDocumentIndex::TokenAccess_Impl::replaceByIndex(
                 {
                     throw lang::IllegalArgumentException();
                 }
-                nPosition = convertMm100ToTwip(nPosition);
+                nPosition = o3tl::toTwips(nPosition, o3tl::Length::mm100);
                 if(nPosition < 0)
                 {
                     throw lang::IllegalArgumentException();
diff --git a/sw/source/core/unocore/unosett.cxx 
b/sw/source/core/unocore/unosett.cxx
index 50aa72b76894..76b7839415b0 100644
--- a/sw/source/core/unocore/unosett.cxx
+++ b/sw/source/core/unocore/unosett.cxx
@@ -841,10 +841,10 @@ void SwXLineNumberingProperties::setPropertyValue(
         {
             sal_Int32 nVal = 0;
             aValue >>= nVal;
-            sal_Int32 nTmp = convertMm100ToTwip(nVal);
+            sal_Int32 nTmp = o3tl::toTwips(nVal, o3tl::Length::mm100);
             if (nTmp > SAL_MAX_UINT16)
                 nTmp = SAL_MAX_UINT16;
-            aFontMetric.SetPosFromLeft( static_cast< sal_uInt16 >(nTmp) );
+            aFontMetric.SetPosFromLeft(nTmp);
         }
         break;
         case WID_INTERVAL   :
@@ -1624,14 +1624,14 @@ void SwXNumberingRules::SetPropertiesToNumFormat(
             sal_Int32 nValue = 0;
             rProp.Value >>= nValue;
             // #i23727# nValue can be negative
-            aFormat.SetAbsLSpace(convertMm100ToTwip(nValue));
+            aFormat.SetAbsLSpace(o3tl::toTwips(nValue, o3tl::Length::mm100));
         }
         else if (rProp.Name == UNO_NAME_SYMBOL_TEXT_DISTANCE)
         {
             sal_Int32 nValue = 0;
             rProp.Value >>= nValue;
             if (nValue >= 0)
-                
aFormat.SetCharTextDistance(static_cast<short>(convertMm100ToTwip(nValue)));
+                aFormat.SetCharTextDistance(o3tl::toTwips(nValue, 
o3tl::Length::mm100));
             else
                 bWrongArg = true;
         }
@@ -1640,7 +1640,7 @@ void SwXNumberingRules::SetPropertiesToNumFormat(
             sal_Int32 nValue = 0;
             rProp.Value >>= nValue;
             // #i23727# nValue can be positive
-            nValue = convertMm100ToTwip(nValue);
+            nValue = o3tl::toTwips(nValue, o3tl::Length::mm100);
             aFormat.SetFirstLineOffset(nValue);
         }
         else if (rProp.Name == UNO_NAME_POSITION_AND_SPACE_MODE)
@@ -1689,7 +1689,7 @@ void SwXNumberingRules::SetPropertiesToNumFormat(
         {
             sal_Int32 nValue = 0;
             rProp.Value >>= nValue;
-            nValue = convertMm100ToTwip(nValue);
+            nValue = o3tl::toTwips(nValue, o3tl::Length::mm100);
             if ( nValue >= 0 )
             {
                 aFormat.SetListtabPos( nValue );
@@ -1703,14 +1703,14 @@ void SwXNumberingRules::SetPropertiesToNumFormat(
         {
             sal_Int32 nValue = 0;
             rProp.Value >>= nValue;
-            nValue = convertMm100ToTwip(nValue);
+            nValue = o3tl::toTwips(nValue, o3tl::Length::mm100);
             aFormat.SetFirstLineIndent( nValue );
         }
         else if (rProp.Name == UNO_NAME_INDENT_AT)
         {
             sal_Int32 nValue = 0;
             rProp.Value >>= nValue;
-            nValue = convertMm100ToTwip(nValue);
+            nValue = o3tl::toTwips(nValue, o3tl::Length::mm100);
             aFormat.SetIndentAt( nValue );
         }
         else if (rProp.Name == UNO_NAME_NUMBERING_TYPE)
@@ -1843,10 +1843,8 @@ void SwXNumberingRules::SetPropertiesToNumFormat(
             awt::Size size;
             if (rProp.Value >>= size)
             {
-                size.Width = convertMm100ToTwip(size.Width);
-                size.Height = convertMm100ToTwip(size.Height);
-                pSetSize->setWidth( size.Width );
-                pSetSize->setHeight( size.Height );
+                pSetSize->setWidth(o3tl::toTwips(size.Width, 
o3tl::Length::mm100));
+                pSetSize->setHeight(o3tl::toTwips(size.Height, 
o3tl::Length::mm100));
             }
             else
                 bWrongArg = true;
diff --git a/sw/source/core/unocore/unotbl.cxx 
b/sw/source/core/unocore/unotbl.cxx
index 9c9b6d52c675..6bb794009ff5 100644
--- a/sw/source/core/unocore/unotbl.cxx
+++ b/sw/source/core/unocore/unotbl.cxx
@@ -174,9 +174,9 @@ static bool lcl_LineToSvxLine(const table::BorderLine& 
rLine, SvxBorderLine& rSv
     rSvxLine.SetColor(Color(ColorTransparency, rLine.Color));
 
     rSvxLine.GuessLinesWidths( SvxBorderLineStyle::NONE,
-                                convertMm100ToTwip( rLine.OuterLineWidth ),
-                                convertMm100ToTwip( rLine.InnerLineWidth ),
-                                convertMm100ToTwip( rLine.LineDistance ) );
+                                o3tl::toTwips(rLine.OuterLineWidth, 
o3tl::Length::mm100),
+                                o3tl::toTwips(rLine.InnerLineWidth, 
o3tl::Length::mm100),
+                                o3tl::toTwips(rLine.LineDistance, 
o3tl::Length::mm100) );
 
     return rLine.InnerLineWidth > 0 || rLine.OuterLineWidth > 0;
 }
@@ -219,7 +219,7 @@ static void lcl_SetSpecialProperty(SwFrameFormat* pFormat,
                 sal_Int32 nWidth = 0;
                 aValue >>= nWidth;
                 aSz.SetWidthPercent(0);
-                aSz.SetWidth ( convertMm100ToTwip ( nWidth ) );
+                aSz.SetWidth ( o3tl::toTwips(nWidth, o3tl::Length::mm100) );
             }
             else if(FN_TABLE_RELATIVE_WIDTH == pEntry->nWID)
             {
@@ -1313,7 +1313,7 @@ void SwXTextTableRow::setPropertyValue(const OUString& 
rPropertyName, const uno:
                     sal_Int32 nHeight = 0;
                     aValue >>= nHeight;
                     Size aSz(aFrameSize.GetSize());
-                    aSz.setHeight( convertMm100ToTwip(nHeight) );
+                    aSz.setHeight( o3tl::toTwips(nHeight, o3tl::Length::mm100) 
);
                     aFrameSize.SetSize(aSz);
                 }
                 pDoc->SetAttr(aFrameSize, *pLn->ClaimFrameFormat());
@@ -2633,7 +2633,7 @@ void SwXTextTable::setPropertyValue(const OUString& 
rPropertyName, const uno::An
                     aBoxInfo.SetLine(aVertLine.isEmpty() ? nullptr : 
&aVertLine, SvxBoxInfoItemLine::VERT);
                     aBoxInfo.SetValid(SvxBoxInfoItemValidFlags::VERT, 
aBorder.IsVerticalLineValid);
 
-                    
aBox.SetAllDistances(o3tl::narrowing<sal_uInt16>(convertMm100ToTwip(aBorder.Distance)));
+                    aBox.SetAllDistances(o3tl::toTwips(aBorder.Distance, 
o3tl::Length::mm100));
                     aBoxInfo.SetValid(SvxBoxInfoItemValidFlags::DISTANCE, 
aBorder.IsDistanceValid);
 
                     aSet.Put(aBox);
@@ -2653,10 +2653,10 @@ void SwXTextTable::setPropertyValue(const OUString& 
rPropertyName, const uno::An
                         !aTableBorderDistances.IsBottomDistanceValid ))
                         break;
 
-                    const sal_uInt16 nLeftDistance =   
convertMm100ToTwip(aTableBorderDistances.LeftDistance);
-                    const sal_uInt16 nRightDistance =  
convertMm100ToTwip(aTableBorderDistances.RightDistance);
-                    const sal_uInt16 nTopDistance =    
convertMm100ToTwip(aTableBorderDistances.TopDistance);
-                    const sal_uInt16 nBottomDistance = 
convertMm100ToTwip(aTableBorderDistances.BottomDistance);
+                    const sal_uInt16 nLeftDistance =   
o3tl::toTwips(aTableBorderDistances.LeftDistance, o3tl::Length::mm100);
+                    const sal_uInt16 nRightDistance =  
o3tl::toTwips(aTableBorderDistances.RightDistance, o3tl::Length::mm100);
+                    const sal_uInt16 nTopDistance =    
o3tl::toTwips(aTableBorderDistances.TopDistance, o3tl::Length::mm100);
+                    const sal_uInt16 nBottomDistance = 
o3tl::toTwips(aTableBorderDistances.BottomDistance, o3tl::Length::mm100);
                     SwDoc* pDoc = pFormat->GetDoc();
                     SwTable* pTable = SwTable::FindTable( pFormat );
                     SwTableLines &rLines = pTable->GetTabLines();
diff --git a/sw/source/filter/ww8/docxattributeoutput.cxx 
b/sw/source/filter/ww8/docxattributeoutput.cxx
index 9bed3f18b726..5dd987b252a9 100644
--- a/sw/source/filter/ww8/docxattributeoutput.cxx
+++ b/sw/source/filter/ww8/docxattributeoutput.cxx
@@ -3411,7 +3411,7 @@ static void impl_borderLine( FSHelperPtr const & 
pSerializer, sal_Int32 elementT
     if( rStyleProps != nullptr && pBorderLine && !pBorderLine->isEmpty() &&
             pBorderLine->GetBorderLineStyle() == 
static_cast<SvxBorderLineStyle>(rStyleProps->LineStyle) &&
             pBorderLine->GetColor() == Color(ColorTransparency, 
rStyleProps->Color) &&
-            pBorderLine->GetWidth() == convertMm100ToTwip( 
rStyleProps->LineWidth ) )
+            pBorderLine->GetWidth() == o3tl::toTwips(rStyleProps->LineWidth, 
o3tl::Length::mm100) )
         return;
 
     rtl::Reference<FastAttributeList> pAttr = 
FastSerializerHelper::createAttrList();
@@ -5148,7 +5148,7 @@ void DocxAttributeOutput::FlyFrameGraphic( const 
SwGrfNode* pGrfNode, const Size
     if (xShapePropSet)
     {
         if (css::awt::Size val; xShapePropSet->getPropertyValue("Size") >>= 
val)
-            aSize = Size(convertMm100ToTwip(val.Width), 
convertMm100ToTwip(val.Height));
+            aSize = Size(o3tl::toTwips(val.Width, o3tl::Length::mm100), 
o3tl::toTwips(val.Height, o3tl::Length::mm100));
     }
 
     m_rExport.SdrExporter().startDMLAnchorInline(pFrameFormat, aSize);
@@ -9692,7 +9692,7 @@ void DocxAttributeOutput::ParaGrabBag(const 
SfxGrabBagItem& rItem)
             m_bParaBeforeAutoSpacing = true;
             // get fixed value which was set during import
             rGrabBagElement.second >>= m_nParaBeforeSpacing;
-            m_nParaBeforeSpacing = convertMm100ToTwip(m_nParaBeforeSpacing);
+            m_nParaBeforeSpacing = o3tl::toTwips(m_nParaBeforeSpacing, 
o3tl::Length::mm100);
             SAL_INFO("sw.ww8", "DocxAttributeOutput::ParaGrabBag: property =" 
<< rGrabBagElement.first << " : m_nParaBeforeSpacing= " << 
m_nParaBeforeSpacing);
         }
         else if (rGrabBagElement.first == "ParaBottomMarginAfterAutoSpacing")
@@ -9700,7 +9700,7 @@ void DocxAttributeOutput::ParaGrabBag(const 
SfxGrabBagItem& rItem)
             m_bParaAfterAutoSpacing = true;
             // get fixed value which was set during import
             rGrabBagElement.second >>= m_nParaAfterSpacing;
-            m_nParaAfterSpacing = convertMm100ToTwip(m_nParaAfterSpacing);
+            m_nParaAfterSpacing = o3tl::toTwips(m_nParaAfterSpacing, 
o3tl::Length::mm100);
             SAL_INFO("sw.ww8", "DocxAttributeOutput::ParaGrabBag: property =" 
<< rGrabBagElement.first << " : m_nParaBeforeSpacing= " << m_nParaAfterSpacing);
         }
         else if (rGrabBagElement.first == "CharThemeFill")
diff --git a/sw/source/filter/ww8/rtfattributeoutput.cxx 
b/sw/source/filter/ww8/rtfattributeoutput.cxx
index 5b93db40de6d..f79422a9a2b7 100644
--- a/sw/source/filter/ww8/rtfattributeoutput.cxx
+++ b/sw/source/filter/ww8/rtfattributeoutput.cxx
@@ -3711,13 +3711,13 @@ void RtfAttributeOutput::ParaGrabBag(const 
SfxGrabBagItem& rItem)
         {
             m_bParaBeforeAutoSpacing = true;
             rValue.second >>= m_nParaBeforeSpacing;
-            m_nParaBeforeSpacing = convertMm100ToTwip(m_nParaBeforeSpacing);
+            m_nParaBeforeSpacing = o3tl::toTwips(m_nParaBeforeSpacing, 
o3tl::Length::mm100);
         }
         else if (rValue.first == "ParaBottomMarginAfterAutoSpacing")
         {
             m_bParaAfterAutoSpacing = true;
             rValue.second >>= m_nParaAfterSpacing;
-            m_nParaAfterSpacing = convertMm100ToTwip(m_nParaAfterSpacing);
+            m_nParaAfterSpacing = o3tl::toTwips(m_nParaAfterSpacing, 
o3tl::Length::mm100);
         }
     }
 }
diff --git a/sw/source/filter/xml/xmltexti.cxx 
b/sw/source/filter/xml/xmltexti.cxx
index 189e26bb57e1..c3d390f93d5e 100644
--- a/sw/source/filter/xml/xmltexti.cxx
+++ b/sw/source/filter/xml/xmltexti.cxx
@@ -105,10 +105,10 @@ static void lcl_putHeightAndWidth ( SfxItemSet &rItemSet,
 {
     if( nWidth > 0 && nHeight > 0 )
     {
-        nWidth = convertMm100ToTwip( nWidth );
+        nWidth = o3tl::toTwips(nWidth, o3tl::Length::mm100);
         if( nWidth < MINFLY )
             nWidth = MINFLY;
-        nHeight = convertMm100ToTwip( nHeight );
+        nHeight = o3tl::toTwips(nHeight, o3tl::Length::mm100);
         if( nHeight < MINFLY )
             nHeight = MINFLY;
         rItemSet.Put( SwFormatFrameSize( SwFrameSize::Fixed, nWidth, nHeight ) 
);
diff --git a/sw/source/uibase/app/appopt.cxx b/sw/source/uibase/app/appopt.cxx
index 55494b43ef9a..a738084516a6 100644
--- a/sw/source/uibase/app/appopt.cxx
+++ b/sw/source/uibase/app/appopt.cxx
@@ -178,7 +178,7 @@ std::optional<SfxItemSet> SwModule::CreateItemSet( 
sal_uInt16 nId )
             aRet.Put( SfxUInt16Item( SID_ATTR_DEFTABSTOP, 
o3tl::narrowing<sal_uInt16>(::GetTabDist(rDefTabs))));
         }
         else
-            aRet.Put(SfxUInt16Item( SID_ATTR_DEFTABSTOP, 
o3tl::narrowing<sal_uInt16>(convertMm100ToTwip(pPref->GetDefTabInMm100()))));
+            aRet.Put(SfxUInt16Item( SID_ATTR_DEFTABSTOP, 
o3tl::toTwips(pPref->GetDefTabInMm100(), o3tl::Length::mm100)));
     }
 
     // Options for GridTabPage
diff --git a/sw/source/uibase/app/docshini.cxx 
b/sw/source/uibase/app/docshini.cxx
index 5869749a04b5..0b47fc6d26cc 100644
--- a/sw/source/uibase/app/docshini.cxx
+++ b/sw/source/uibase/app/docshini.cxx
@@ -658,7 +658,7 @@ void SwDocShell::SubInitNew()
 
         aDfltSet.Put( aHyp );
 
-        sal_uInt16 nNewPos = static_cast< sal_uInt16 
>(convertMm100ToTwip(SW_MOD()->GetUsrPref(false)->GetDefTabInMm100()));
+        sal_uInt16 nNewPos = 
o3tl::toTwips(SW_MOD()->GetUsrPref(false)->GetDefTabInMm100(), 
o3tl::Length::mm100);
         if( nNewPos )
             aDfltSet.Put( SvxTabStopItem( 1, nNewPos,
                                           SvxTabAdjust::Default, 
RES_PARATR_TABSTOP ) );
diff --git a/sw/source/uibase/config/fontcfg.cxx 
b/sw/source/uibase/config/fontcfg.cxx
index 3792fdb16012..d1f5059a3566 100644
--- a/sw/source/uibase/config/fontcfg.cxx
+++ b/sw/source/uibase/config/fontcfg.cxx
@@ -113,7 +113,7 @@ SwStdFontConfig::SwStdFontConfig() :
             else
             {
                pValues[nProp] >>= nDefaultFontHeight[nProp - DEF_FONT_COUNT];
-               nDefaultFontHeight[nProp - DEF_FONT_COUNT] = 
convertMm100ToTwip(nDefaultFontHeight[nProp - DEF_FONT_COUNT]);
+               nDefaultFontHeight[nProp - DEF_FONT_COUNT] = 
o3tl::toTwips(nDefaultFontHeight[nProp - DEF_FONT_COUNT], o3tl::Length::mm100);
             }
         }
     }
diff --git a/sw/source/uibase/config/modcfg.cxx 
b/sw/source/uibase/config/modcfg.cxx
index 4733727e7043..425534945e67 100644
--- a/sw/source/uibase/config/modcfg.cxx
+++ b/sw/source/uibase/config/modcfg.cxx
@@ -1139,10 +1139,10 @@ void SwTableConfig::Load()
             sal_Int32 nTemp = 0;
             switch (nProp)
             {
-                case 0 : pValues[nProp] >>= nTemp; m_nTableHMove = 
o3tl::narrowing<sal_uInt16>(convertMm100ToTwip(nTemp)); break;  //"Shift/Row",
-                case 1 : pValues[nProp] >>= nTemp; m_nTableVMove = 
o3tl::narrowing<sal_uInt16>(convertMm100ToTwip(nTemp)); break;     
//"Shift/Column",
-                case 2 : pValues[nProp] >>= nTemp; m_nTableHInsert = 
o3tl::narrowing<sal_uInt16>(convertMm100ToTwip(nTemp)); break;   //"Insert/Row",
-                case 3 : pValues[nProp] >>= nTemp; m_nTableVInsert = 
o3tl::narrowing<sal_uInt16>(convertMm100ToTwip(nTemp)); break;   
//"Insert/Column",
+                case 0 : pValues[nProp] >>= nTemp; m_nTableHMove = 
o3tl::toTwips(nTemp, o3tl::Length::mm100); break;  //"Shift/Row",
+                case 1 : pValues[nProp] >>= nTemp; m_nTableVMove = 
o3tl::toTwips(nTemp, o3tl::Length::mm100); break;     //"Shift/Column",
+                case 2 : pValues[nProp] >>= nTemp; m_nTableHInsert = 
o3tl::toTwips(nTemp, o3tl::Length::mm100); break;   //"Insert/Row",
+                case 3 : pValues[nProp] >>= nTemp; m_nTableVInsert = 
o3tl::toTwips(nTemp, o3tl::Length::mm100); break;   //"Insert/Column",
                 case 4 : pValues[nProp] >>= nTemp; m_eTableChgMode = 
static_cast<TableChgMode>(nTemp); break;   //"Change/Effect",
                 case 5 : m_bInsTableFormatNum = 
*o3tl::doAccess<bool>(pValues[nProp]);  break;  //"Input/NumberRecognition",
                 case 6 : m_bInsTableChangeNumFormat = 
*o3tl::doAccess<bool>(pValues[nProp]); break;  
//"Input/NumberFormatRecognition",
diff --git a/sw/source/uibase/config/usrpref.cxx 
b/sw/source/uibase/config/usrpref.cxx
index 7f85d5a78940..0c759a78cf94 100644
--- a/sw/source/uibase/config/usrpref.cxx
+++ b/sw/source/uibase/config/usrpref.cxx
@@ -475,8 +475,8 @@ void SwGridConfig::Load()
                 case  0: m_rParent.SetSnap(bSet); break;//        
"Option/SnapToGrid",
                 case  1: m_rParent.SetGridVisible(bSet); 
break;//"Option/VisibleGrid",
                 case  2: m_rParent.SetSynchronize(bSet); break;//  
"Option/Synchronize",
-                case  3: aSnap.setWidth( convertMm100ToTwip(nSet) ); break;//  
    "Resolution/XAxis",
-                case  4: aSnap.setHeight( convertMm100ToTwip(nSet) ); break;// 
     "Resolution/YAxis",
+                case  3: aSnap.setWidth( o3tl::toTwips(nSet, 
o3tl::Length::mm100) ); break;//      "Resolution/XAxis",
+                case  4: aSnap.setHeight( o3tl::toTwips(nSet, 
o3tl::Length::mm100) ); break;//      "Resolution/YAxis",
                 case  5: m_rParent.SetDivisionX(static_cast<short>(nSet)); 
break;//   "Subdivision/XAxis",
                 case  6: m_rParent.SetDivisionY(static_cast<short>(nSet)); 
break;//   "Subdivision/YAxis"
             }
diff --git a/sw/source/uibase/envelp/envimg.cxx 
b/sw/source/uibase/envelp/envimg.cxx
index e1db006171dc..b676b028f018 100644
--- a/sw/source/uibase/envelp/envimg.cxx
+++ b/sw/source/uibase/envelp/envimg.cxx
@@ -174,27 +174,27 @@ SwEnvCfgItem::SwEnvCfgItem() :
                 case  2: m_aEnvItem.m_bSend = 
*o3tl::doAccess<bool>(pValues[nProp]); break;// "Inscription/UseSender",
                 case  3:
                     pValues[nProp] >>= m_aEnvItem.m_nAddrFromLeft;// 
"Format/AddresseeFromLeft",
-                    m_aEnvItem.m_nAddrFromLeft = 
convertMm100ToTwip(m_aEnvItem.m_nAddrFromLeft);
+                    m_aEnvItem.m_nAddrFromLeft = 
o3tl::toTwips(m_aEnvItem.m_nAddrFromLeft, o3tl::Length::mm100);
                 break;
                 case  4:
                     pValues[nProp] >>= m_aEnvItem.m_nAddrFromTop;  // 
"Format/AddresseeFromTop",
-                    m_aEnvItem.m_nAddrFromTop = 
convertMm100ToTwip(m_aEnvItem.m_nAddrFromTop);
+                    m_aEnvItem.m_nAddrFromTop = 
o3tl::toTwips(m_aEnvItem.m_nAddrFromTop, o3tl::Length::mm100);
                 break;
                 case  5:
                     pValues[nProp] >>= m_aEnvItem.m_nSendFromLeft; // 
"Format/SenderFromLeft",
-                    m_aEnvItem.m_nSendFromLeft = 
convertMm100ToTwip(m_aEnvItem.m_nSendFromLeft);
+                    m_aEnvItem.m_nSendFromLeft = 
o3tl::toTwips(m_aEnvItem.m_nSendFromLeft, o3tl::Length::mm100);
                 break;
                 case  6:
                     pValues[nProp] >>= m_aEnvItem.m_nSendFromTop;// 
"Format/SenderFromTop",
-                    m_aEnvItem.m_nSendFromTop = 
convertMm100ToTwip(m_aEnvItem.m_nSendFromTop);
+                    m_aEnvItem.m_nSendFromTop = 
o3tl::toTwips(m_aEnvItem.m_nSendFromTop, o3tl::Length::mm100);
                 break;
                 case  7:
                     pValues[nProp] >>= m_aEnvItem.m_nWidth; // "Format/Width",
-                    m_aEnvItem.m_nWidth = 
convertMm100ToTwip(m_aEnvItem.m_nWidth);
+                    m_aEnvItem.m_nWidth = o3tl::toTwips(m_aEnvItem.m_nWidth, 
o3tl::Length::mm100);
                 break;
                 case  8:
                     pValues[nProp] >>= m_aEnvItem.m_nHeight; // 
"Format/Height",
-                    m_aEnvItem.m_nHeight = 
convertMm100ToTwip(m_aEnvItem.m_nHeight);
+                    m_aEnvItem.m_nHeight = o3tl::toTwips(m_aEnvItem.m_nHeight, 
o3tl::Length::mm100);
                 break;
                 case  9:
                 {
@@ -204,11 +204,11 @@ SwEnvCfgItem::SwEnvCfgItem() :
                 case 10: m_aEnvItem.m_bPrintFromAbove = 
*o3tl::doAccess<bool>(pValues[nProp]); break;// "Print/FromAbove",
                 case 11:
                     pValues[nProp] >>= m_aEnvItem.m_nShiftRight;
-                    m_aEnvItem.m_nShiftRight = 
convertMm100ToTwip(m_aEnvItem.m_nShiftRight);// "Print/Right",
+                    m_aEnvItem.m_nShiftRight = 
o3tl::toTwips(m_aEnvItem.m_nShiftRight, o3tl::Length::mm100);// "Print/Right",
                 break;
                 case 12:
                     pValues[nProp] >>= m_aEnvItem.m_nShiftDown;
-                    m_aEnvItem.m_nShiftDown = 
convertMm100ToTwip(m_aEnvItem.m_nShiftDown);
+                    m_aEnvItem.m_nShiftDown = 
o3tl::toTwips(m_aEnvItem.m_nShiftDown, o3tl::Length::mm100);
                 break;// "Print/Down"
             }
         }
diff --git a/sw/source/uibase/envelp/labelcfg.cxx 
b/sw/source/uibase/envelp/labelcfg.cxx
index e0fbe142f688..413768e030f3 100644
--- a/sw/source/uibase/envelp/labelcfg.cxx
+++ b/sw/source/uibase/envelp/labelcfg.cxx
@@ -180,16 +180,16 @@ static std::unique_ptr<SwLabRec> lcl_CreateSwLabRec(const 
OUString& rType, const
         switch(nTok++)
         {
             case  0 : pNewRec->m_bCont = sToken[0] == 'C'; break;
-            case  1 : pNewRec->m_nHDist    = convertMm100ToTwip(nVal);  break;
-            case  2 : pNewRec->m_nVDist    = convertMm100ToTwip(nVal);  break;
-            case  3 : pNewRec->m_nWidth    = convertMm100ToTwip(nVal);  break;
-            case  4 : pNewRec->m_nHeight   = convertMm100ToTwip(nVal);  break;
-            case  5 : pNewRec->m_nLeft     = convertMm100ToTwip(nVal);  break;
-            case  6 : pNewRec->m_nUpper    = convertMm100ToTwip(nVal);  break;
+            case  1 : pNewRec->m_nHDist    = o3tl::toTwips(nVal, 
o3tl::Length::mm100);  break;
+            case  2 : pNewRec->m_nVDist    = o3tl::toTwips(nVal, 
o3tl::Length::mm100);  break;
+            case  3 : pNewRec->m_nWidth    = o3tl::toTwips(nVal, 
o3tl::Length::mm100);  break;
+            case  4 : pNewRec->m_nHeight   = o3tl::toTwips(nVal, 
o3tl::Length::mm100);  break;
+            case  5 : pNewRec->m_nLeft     = o3tl::toTwips(nVal, 
o3tl::Length::mm100);  break;
+            case  6 : pNewRec->m_nUpper    = o3tl::toTwips(nVal, 
o3tl::Length::mm100);  break;
             case  7 : pNewRec->m_nCols     = nVal;                 break;
             case  8 : pNewRec->m_nRows     = nVal;                 break;
-            case  9 : pNewRec->m_nPWidth   = convertMm100ToTwip(nVal);  break;
-            case 10 : pNewRec->m_nPHeight  = convertMm100ToTwip(nVal);  break;
+            case  9 : pNewRec->m_nPWidth   = o3tl::toTwips(nVal, 
o3tl::Length::mm100);  break;
+            case 10 : pNewRec->m_nPHeight  = o3tl::toTwips(nVal, 
o3tl::Length::mm100);  break;
         }
     }
     // lines added for compatibility with custom label definitions saved 
before patch fdo#44516
diff --git a/sw/source/uibase/envelp/labimg.cxx 
b/sw/source/uibase/envelp/labimg.cxx
index 5e7051cbc8b7..a3cfc5cc52b6 100644
--- a/sw/source/uibase/envelp/labimg.cxx
+++ b/sw/source/uibase/envelp/labimg.cxx
@@ -287,35 +287,35 @@ SwLabCfgItem::SwLabCfgItem(bool bLabel) :
                     case  4: pValues[nProp] >>= aItem.m_nRows;            
break;// "Format/Row",
                     case  5:
                         pValues[nProp] >>= aItem.m_lHDist;
-                        aItem.m_lHDist = convertMm100ToTwip(aItem.m_lHDist);
+                        aItem.m_lHDist = o3tl::toTwips(aItem.m_lHDist, 
o3tl::Length::mm100);
                     break;// "Format/HorizontalDistance",
                     case  6:
                         pValues[nProp] >>= aItem.m_lVDist;
-                        aItem.m_lVDist = convertMm100ToTwip(aItem.m_lVDist);
+                        aItem.m_lVDist = o3tl::toTwips(aItem.m_lVDist, 
o3tl::Length::mm100);
                     break;// "Format/VerticalDistance",
                     case  7:
                         pValues[nProp] >>= aItem.m_lWidth;
-                        aItem.m_lWidth = convertMm100ToTwip(aItem.m_lWidth);
+                        aItem.m_lWidth = o3tl::toTwips(aItem.m_lWidth, 
o3tl::Length::mm100);
                     break;// "Format/Width",
                     case  8:
                         pValues[nProp] >>= aItem.m_lHeight;
-                        aItem.m_lHeight = convertMm100ToTwip(aItem.m_lHeight);
+                        aItem.m_lHeight = o3tl::toTwips(aItem.m_lHeight, 
o3tl::Length::mm100);
                     break;// "Format/Height",
                     case  9:
                         pValues[nProp] >>= aItem.m_lLeft;
-                        aItem.m_lLeft = convertMm100ToTwip(aItem.m_lLeft);
+                        aItem.m_lLeft = o3tl::toTwips(aItem.m_lLeft, 
o3tl::Length::mm100);
                     break;// "Format/LeftMargin",
                     case 10:
                         pValues[nProp] >>= aItem.m_lUpper;
-                        aItem.m_lUpper = convertMm100ToTwip(aItem.m_lUpper);
+                        aItem.m_lUpper = o3tl::toTwips(aItem.m_lUpper, 
o3tl::Length::mm100);
                     break;// "Format/TopMargin",
                     case 11:
                         pValues[nProp] >>= aItem.m_lPWidth;
-                        aItem.m_lPWidth = convertMm100ToTwip(aItem.m_lPWidth);
+                        aItem.m_lPWidth = o3tl::toTwips(aItem.m_lPWidth, 
o3tl::Length::mm100);
                     break;// "Format/PageWidth",
                     case 12:
                         pValues[nProp] >>= aItem.m_lPHeight;
-                        aItem.m_lPHeight = 
convertMm100ToTwip(aItem.m_lPHeight);
+                        aItem.m_lPHeight = o3tl::toTwips(aItem.m_lPHeight, 
o3tl::Length::mm100);
                     break;// "Format/PageHeight",
                     case 13: aItem.m_bSynchron = 
*o3tl::doAccess<bool>(pValues[nProp]); break;// "Option/Synchronize",
                     case 14: aItem.m_bPage = 
*o3tl::doAccess<bool>(pValues[nProp]); break;// "Option/Page",
diff --git a/sw/source/uibase/shells/grfsh.cxx 
b/sw/source/uibase/shells/grfsh.cxx
index a93432251a47..a217b5d56ecb 100644
--- a/sw/source/uibase/shells/grfsh.cxx
+++ b/sw/source/uibase/shells/grfsh.cxx
@@ -211,10 +211,10 @@ void SwGrfShell::Execute(SfxRequest &rReq)
                     rSh.StartUndo(SwUndoId::START);
                     tools::Rectangle aScaledCropedRectangle = 
aDialog.GetScaledCropRectangle();
 
-                    aCrop.SetLeft(   convertMm100ToTwip( 
aScaledCropedRectangle.Left() ));
-                    aCrop.SetTop(    convertMm100ToTwip( 
aScaledCropedRectangle.Top() ));
-                    aCrop.SetRight(  convertMm100ToTwip( 
aScaledCropedRectangle.Right() ));
-                    aCrop.SetBottom( convertMm100ToTwip( 
aScaledCropedRectangle.Bottom() ));
+                    aCrop.SetLeft(   o3tl::toTwips( 
aScaledCropedRectangle.Left(), o3tl::Length::mm100 ));
+                    aCrop.SetTop(    o3tl::toTwips( 
aScaledCropedRectangle.Top(), o3tl::Length::mm100 ));
+                    aCrop.SetRight(  o3tl::toTwips( 
aScaledCropedRectangle.Right(), o3tl::Length::mm100 ));

... etc. - the rest is truncated

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