diff --git a/src/app/valentina/xml/vpattern.cpp b/src/app/valentina/xml/vpattern.cpp
index 63ec5c778..06e5b999f 100644
--- a/src/app/valentina/xml/vpattern.cpp
+++ b/src/app/valentina/xml/vpattern.cpp
@@ -532,7 +532,7 @@ void VPattern::LiteParseIncrements()
 
         data->ClearUniqueIncrementNames();
 
-        Q_STATIC_ASSERT_X(static_cast<int>(VarType::Unknown) == 11, "Check that you used all types");
+        Q_STATIC_ASSERT_X(static_cast<int>(VarType::Unknown) == 12, "Check that you used all types");
         data->ClearVariables(VarType::Increment);
         data->ClearVariables(VarType::IncrementSeparator);
 
@@ -4447,14 +4447,15 @@ void VPattern::PrepareForParse(const Document &parse)
     }
     else if (parse == Document::LiteParse || parse == Document::FullLiteParse)
     {
-        Q_STATIC_ASSERT_X(static_cast<int>(VarType::Unknown) == 11, "Check that you used all types");
+        Q_STATIC_ASSERT_X(static_cast<int>(VarType::Unknown) == 12, "Check that you used all types");
         QVector<VarType> types{VarType::LineAngle,
                                VarType::LineLength,
                                VarType::CurveLength,
                                VarType::CurveCLength,
                                VarType::ArcRadius,
                                VarType::CurveAngle,
-                               VarType::PieceArea};
+                               VarType::PieceExternalArea,
+                               VarType::PieceSeamLineArea};
         if (parse == Document::FullLiteParse)
         {
             types.append(VarType::Increment);
diff --git a/src/libs/ifc/ifcdef.cpp b/src/libs/ifc/ifcdef.cpp
index 1063320a2..56db11f4b 100644
--- a/src/libs/ifc/ifcdef.cpp
+++ b/src/libs/ifc/ifcdef.cpp
@@ -318,6 +318,7 @@ const QString currentSeamAllowance = QStringLiteral("CurrentSeamAllowance");
 const QString rotation_V           = QStringLiteral("Rotation");
 const QString rotationElArc_       = rotation_V + elarc_;
 const QString pieceArea_           = QStringLiteral("PieceArea_");
+const QString pieceSeamLineArea_   = QStringLiteral("PieceSeamLineArea_");
 
 const QStringList builInVariables
 {
@@ -348,5 +349,6 @@ const QStringList builInVariables
     c1LengthSplPath,
     c2LengthSplPath,
     rotationElArc_,
-    pieceArea_
+    pieceArea_,
+    pieceSeamLineArea_
 };
diff --git a/src/libs/ifc/ifcdef.h b/src/libs/ifc/ifcdef.h
index 7ce66fbe9..03a02fcf5 100644
--- a/src/libs/ifc/ifcdef.h
+++ b/src/libs/ifc/ifcdef.h
@@ -243,6 +243,7 @@ extern const QString currentSeamAllowance;
 extern const QString rotation_V;
 extern const QString rotationElArc_;
 extern const QString pieceArea_;
+extern const QString pieceSeamLineArea_;
 
 extern const QStringList builInVariables;
 
diff --git a/src/libs/vmisc/def.h b/src/libs/vmisc/def.h
index ad48cb5b3..a6e28a5d9 100644
--- a/src/libs/vmisc/def.h
+++ b/src/libs/vmisc/def.h
@@ -275,7 +275,8 @@ enum class Vis : ToolVisHolderType
 };
 
 enum class VarType : qint8 { Measurement, MeasurementSeparator, Increment, IncrementSeparator, LineLength, CurveLength,
-                             CurveCLength, LineAngle, CurveAngle, ArcRadius, PieceArea, Unknown };
+                             CurveCLength, LineAngle, CurveAngle, ArcRadius, PieceExternalArea, PieceSeamLineArea,
+                             Unknown };
 
 enum class IncrementType : qint8 { Increment, Separator };
 
diff --git a/src/libs/vpatterndb/variables/vincrement_p.h b/src/libs/vpatterndb/variables/vincrement_p.h
index b57746eb1..e939471a3 100644
--- a/src/libs/vpatterndb/variables/vincrement_p.h
+++ b/src/libs/vpatterndb/variables/vincrement_p.h
@@ -31,7 +31,6 @@
 
 #include <QSharedData>
 
-#include "../ifc/ifcdef.h"
 #include "../vcontainer.h"
 #if QT_VERSION < QT_VERSION_CHECK(5, 5, 0)
 #include "../vmisc/diagnostic.h"
@@ -54,7 +53,7 @@ public:
     {
         // When we create an increment in the dialog it will get neccesary data. Such data must be removed because will
         // confuse a user. Increment should not know nothing about internal variables.
-        Q_STATIC_ASSERT_X(static_cast<int>(VarType::Unknown) == 11, "Check that you used all types");
+        Q_STATIC_ASSERT_X(static_cast<int>(VarType::Unknown) == 12, "Check that you used all types");
         this->data->ClearVariables(QVector<VarType>{VarType::LineAngle,
                                                     VarType::LineLength,
                                                     VarType::CurveLength,
@@ -62,7 +61,8 @@ public:
                                                     VarType::ArcRadius,
                                                     VarType::CurveAngle,
                                                     VarType::IncrementSeparator,
-                                                    VarType::PieceArea});
+                                                    VarType::PieceExternalArea,
+                                                    VarType::PieceSeamLineArea});
     }
 
     VIncrementData(const VIncrementData &incr)
diff --git a/src/libs/vpatterndb/variables/vinternalvariable.h b/src/libs/vpatterndb/variables/vinternalvariable.h
index 330f2a253..869b3f785 100644
--- a/src/libs/vpatterndb/variables/vinternalvariable.h
+++ b/src/libs/vpatterndb/variables/vinternalvariable.h
@@ -63,7 +63,6 @@ public:
     void         SetName(const QString &name);
 
     VarType      GetType() const;
-    void         SetType(const VarType &type);
 
     void    SetAlias(const QString &alias);
     QString GetAlias() const;
@@ -73,6 +72,7 @@ public:
     virtual bool IsNotUsed() const;
 protected:
     void SetValue(const qreal &value);
+    void SetType(const VarType &type);
 private:
     QSharedDataPointer<VInternalVariableData> d;
 };
diff --git a/src/libs/vpatterndb/variables/vpiecearea.cpp b/src/libs/vpatterndb/variables/vpiecearea.cpp
index 75a7a1866..3806c9204 100644
--- a/src/libs/vpatterndb/variables/vpiecearea.cpp
+++ b/src/libs/vpatterndb/variables/vpiecearea.cpp
@@ -36,29 +36,38 @@
 VPieceArea::VPieceArea()
     :d(new VPieceAreaData)
 {
-    SetType(VarType::PieceArea);
+    SetType(VarType::PieceExternalArea);
 }
 
 //---------------------------------------------------------------------------------------------------------------------
-VPieceArea::VPieceArea(quint32 pieceId, const VPiece &piece, const VContainer *data, Unit unit)
+VPieceArea::VPieceArea(PieceAreaType type, quint32 pieceId, const VPiece &piece, const VContainer *data, Unit unit)
     :d(new VPieceAreaData(pieceId))
 {
     // cppcheck-suppress unknownMacro
     SCASSERT(data != nullptr)
 
-    SetType(VarType::PieceArea);
-
     QString shortName = piece.GetShortName();
     if (shortName.isEmpty())
     {
         shortName = piece.GetName().replace(QChar(QChar::Space), '_').left(25);
         if (shortName.isEmpty() || not QRegularExpression(VPiece::ShortNameRegExp()).match(shortName).hasMatch())
         {
-            shortName = QObject::tr("Unknown");
+            shortName = QObject::tr("Unknown", "piece area");
         }
     }
-    SetName(pieceArea_ + shortName);
-    VInternalVariable::SetValue(FromPixel2(piece.Area(data), unit));
+
+    if (type == PieceAreaType::External)
+    {
+        SetType(VarType::PieceExternalArea);
+        SetName(pieceArea_ + shortName);
+        VInternalVariable::SetValue(FromPixel2(piece.ExternalArea(data), unit));
+    }
+    else
+    {
+        SetType(VarType::PieceSeamLineArea);
+        SetName(pieceSeamLineArea_ + shortName);
+        VInternalVariable::SetValue(FromPixel2(piece.SeamLineArea(data), unit));
+    }
 }
 
 //---------------------------------------------------------------------------------------------------------------------
@@ -95,9 +104,11 @@ auto VPieceArea::operator=(VPieceArea &&var) Q_DECL_NOTHROW -> VPieceArea &
 //---------------------------------------------------------------------------------------------------------------------
 void VPieceArea::SetValue(quint32 pieceId, const VPiece &piece, const VContainer *data, Unit unit)
 {
+    // cppcheck-suppress unknownMacro
     SCASSERT(data != nullptr)
     d->m_pieceId = pieceId;
-    VInternalVariable::SetValue(FromPixel(piece.Area(data), unit));
+    VInternalVariable::SetValue(FromPixel2(GetType() == VarType::PieceExternalArea ? piece.ExternalArea(data)
+                                                                                   : piece.SeamLineArea(data), unit));
 }
 
 //---------------------------------------------------------------------------------------------------------------------
diff --git a/src/libs/vpatterndb/variables/vpiecearea.h b/src/libs/vpatterndb/variables/vpiecearea.h
index d0bf0a97d..83f05e331 100644
--- a/src/libs/vpatterndb/variables/vpiecearea.h
+++ b/src/libs/vpatterndb/variables/vpiecearea.h
@@ -34,11 +34,13 @@ class VPiece;
 class VContainer;
 class VPieceAreaData;
 
+enum class PieceAreaType : qint8 { External, SeamLine };
+
 class VPieceArea final :public VInternalVariable
 {
 public:
     VPieceArea();
-    explicit VPieceArea(quint32 pieceId, const VPiece &piece, const VContainer *data, Unit unit);
+    explicit VPieceArea(PieceAreaType type, quint32 pieceId, const VPiece &piece, const VContainer *data, Unit unit);
     VPieceArea(const VPieceArea &var) = default;
     ~VPieceArea() override;
 
diff --git a/src/libs/vpatterndb/vcontainer.cpp b/src/libs/vpatterndb/vcontainer.cpp
index de03964af..d2600aa7c 100644
--- a/src/libs/vpatterndb/vcontainer.cpp
+++ b/src/libs/vpatterndb/vcontainer.cpp
@@ -392,7 +392,7 @@ void VContainer::ClearForFullParse()
 
     d->pieces->clear();
     d->piecePaths->clear();
-    Q_STATIC_ASSERT_X(static_cast<int>(VarType::Unknown) == 11, "Check that you used all types");
+    Q_STATIC_ASSERT_X(static_cast<int>(VarType::Unknown) == 12, "Check that you used all types");
     ClearVariables(QVector<VarType>{VarType::Increment,
                                     VarType::IncrementSeparator,
                                     VarType::LineAngle,
@@ -401,7 +401,8 @@ void VContainer::ClearForFullParse()
                                     VarType::CurveCLength,
                                     VarType::ArcRadius,
                                     VarType::CurveAngle,
-                                    VarType::PieceArea});
+                                    VarType::PieceExternalArea,
+                                    VarType::PieceSeamLineArea});
     ClearGObjects();
     ClearUniqueNames();
 }
@@ -580,7 +581,8 @@ void VContainer::FillPiecesAreas(Unit unit)
     auto i = pieces->constBegin();
     while (i != pieces->constEnd())
     {
-        AddVariable(QSharedPointer<VPieceArea>::create(i.key(), i.value(), this, unit));
+        AddVariable(QSharedPointer<VPieceArea>::create(PieceAreaType::External, i.key(), i.value(), this, unit));
+        AddVariable(QSharedPointer<VPieceArea>::create(PieceAreaType::SeamLine, i.key(), i.value(), this, unit));
         ++i;
     }
 }
@@ -658,7 +660,12 @@ const QMap<QString, QSharedPointer<VCurveAngle> > VContainer::DataAnglesCurves()
 //---------------------------------------------------------------------------------------------------------------------
 const QMap<QString, QSharedPointer<VPieceArea> > VContainer::DataPieceArea() const
 {
-    return DataVar<VPieceArea>(VarType::PieceArea);
+    QMap<QString, QSharedPointer<VPieceArea> > externalAreas = DataVar<VPieceArea>(VarType::PieceExternalArea);
+    QMap<QString, QSharedPointer<VPieceArea> > seamLineAreas = DataVar<VPieceArea>(VarType::PieceSeamLineArea);
+
+    Insert(externalAreas, seamLineAreas);
+
+    return externalAreas;
 }
 
 //---------------------------------------------------------------------------------------------------------------------
diff --git a/src/libs/vpatterndb/vpiece.cpp b/src/libs/vpatterndb/vpiece.cpp
index 2c9e38404..f6222683d 100644
--- a/src/libs/vpatterndb/vpiece.cpp
+++ b/src/libs/vpatterndb/vpiece.cpp
@@ -1332,6 +1332,37 @@ void VPiece::TestInternalPathsIntersections(const VContainer *data) const
     }
 }
 
+//---------------------------------------------------------------------------------------------------------------------
+qreal VPiece::Area(const QVector<QPointF> &shape, const VContainer *data) const
+{
+    SCASSERT(data != nullptr)
+
+    const qreal mainArea = qAbs(VAbstractPiece::SumTrapezoids(shape))/2.0;
+
+    qreal internalPathArea = 0;
+    const QVector<quint32> pathsId = GetInternalPaths();
+    for (auto id : pathsId)
+    {
+        const VPiecePath path = data->GetPiecePath(id);
+        if (path.GetType() != PiecePathType::InternalPath || not path.IsVisible(data->DataVariables()) ||
+            not path.IsCutPath())
+        {
+            continue;
+        }
+
+        QVector<QPointF> points;
+        CastTo(path.PathPoints(data, shape), points);
+        if (points.isEmpty() || not VFuzzyComparePoints(ConstFirst(points), ConstLast(points)))
+        {
+            continue;
+        }
+
+        internalPathArea += qAbs(VAbstractPiece::SumTrapezoids(points))/2.0;
+    }
+
+    return mainArea - internalPathArea;
+}
+
 //---------------------------------------------------------------------------------------------------------------------
 void VPiece::DumpPiece(const VPiece &piece, const VContainer *data, const QString &templateName)
 {
@@ -1383,35 +1414,17 @@ void VPiece::TestInternalPaths(const VContainer *data) const
 }
 
 //---------------------------------------------------------------------------------------------------------------------
-auto VPiece::Area(const VContainer *data) const -> qreal
+auto VPiece::ExternalArea(const VContainer *data) const -> qreal
 {
-    SCASSERT(data != nullptr)
+    return Area(CuttingPathPoints(data), data);
+}
 
-    const QVector<QPointF> mainContour = CuttingPathPoints(data);
-    const qreal mainArea = qAbs(VAbstractPiece::SumTrapezoids(mainContour))/2.0;
-
-    qreal internalPathArea = 0;
-    const QVector<quint32> pathsId = GetInternalPaths();
-    for (auto id : pathsId)
-    {
-        const VPiecePath path = data->GetPiecePath(id);
-        if (path.GetType() != PiecePathType::InternalPath || not path.IsVisible(data->DataVariables()) ||
-            not path.IsCutPath())
-        {
-            continue;
-        }
-
-        QVector<QPointF> points;
-        CastTo(path.PathPoints(data, mainContour), points);
-        if (points.isEmpty() || not VFuzzyComparePoints(ConstFirst(points), ConstLast(points)))
-        {
-            continue;
-        }
-
-        internalPathArea += qAbs(VAbstractPiece::SumTrapezoids(points))/2.0;
-    }
-
-    return mainArea - internalPathArea;
+//---------------------------------------------------------------------------------------------------------------------
+auto VPiece::SeamLineArea(const VContainer *data) const -> qreal
+{
+    QVector<QPointF> shape;
+    CastTo(MainPathPoints(data), shape);
+    return Area(shape, data);
 }
 
 //---------------------------------------------------------------------------------------------------------------------
diff --git a/src/libs/vpatterndb/vpiece.h b/src/libs/vpatterndb/vpiece.h
index 1fafabe79..e210018b1 100644
--- a/src/libs/vpatterndb/vpiece.h
+++ b/src/libs/vpatterndb/vpiece.h
@@ -145,7 +145,8 @@ public:
     void TestInternalPaths(const VContainer *data) const;
 
     static auto ShortNameRegExp() -> QString;
-    auto Area(const VContainer *data) const -> qreal;
+    auto ExternalArea(const VContainer *data) const -> qreal;
+    auto SeamLineArea(const VContainer *data) const -> qreal;
 private:
     QSharedDataPointer<VPieceData> d;
 
@@ -174,6 +175,8 @@ private:
 
     void TestInternalPathCuttingPathIntersection(const VContainer *data) const;
     void TestInternalPathsIntersections(const VContainer *data) const;
+
+    auto Area(const QVector<QPointF> &shape, const VContainer *data) const -> qreal;
 };
 
 Q_DECLARE_TYPEINFO(VPiece, Q_MOVABLE_TYPE); // NOLINT
diff --git a/src/libs/vpatterndb/vtranslatevars.cpp b/src/libs/vpatterndb/vtranslatevars.cpp
index fa700106e..51ebff020 100644
--- a/src/libs/vpatterndb/vtranslatevars.cpp
+++ b/src/libs/vpatterndb/vtranslatevars.cpp
@@ -394,6 +394,8 @@ void VTranslateVars::InitVariables()
                                                 "Do not add symbol _ to the end of the name"));
     variables.insert(rotationElArc_, translate("VTranslateVars", "RotationElArc_", "Left symbol _ in the name"));
     variables.insert(pieceArea_, translate("VTranslateVars", "PieceArea_", "Left symbol _ in the name"));
+    variables.insert(pieceSeamLineArea_, translate("VTranslateVars", "PieceSeamLineArea_",
+                                                   "Left symbol _ in the name"));
 }
 
 //---------------------------------------------------------------------------------------------------------------------
diff --git a/src/test/TranslationsTest/tst_buitinregexp.cpp b/src/test/TranslationsTest/tst_buitinregexp.cpp
index f3d9a3bd6..83d278ecb 100644
--- a/src/test/TranslationsTest/tst_buitinregexp.cpp
+++ b/src/test/TranslationsTest/tst_buitinregexp.cpp
@@ -171,6 +171,7 @@ void TST_BuitInRegExp::TestCheckUnderlineExists_data()
     data.insert(c2LengthSplPath, false);
     data.insert(rotationElArc_, true);
     data.insert(pieceArea_, true);
+    data.insert(pieceSeamLineArea_, true);
 
     //Catch case when new internal variable appears.
     QCOMPARE(data.size(), builInVariables.size());