diff --git a/src/gui/text/qfont.cpp b/src/gui/text/qfont.cpp
index c168423533..9ea6970409 100644
--- a/src/gui/text/qfont.cpp
+++ b/src/gui/text/qfont.cpp
@@ -1148,6 +1148,46 @@ QFont::Weight QFont::weight() const
     \value Black 900
 */
 
+#if QT_DEPRECATED_SINCE(6, 0)
+/*!
+    \obsolete Use setWeight() instead.
+
+    Sets the weight of the font to \a weight using the legacy font weight
+    scale of Qt 5 and previous versions.
+
+    Since Qt 6, the OpenType standard's font weight scale is used instead
+    of a non-standard scale. This requires conversion from values that
+    use the old scale. For convenience, this function may be used when
+    porting from code which uses the old weight scale.
+
+    \note If styleName() is set, this value may be ignored for font selection.
+
+    \sa setWeight(), weight(), legacyWeight(), QFontInfo
+*/
+void QFont::setLegacyWeight(int legacyWeight)
+{
+    setWeight(QFont::Weight(qt_legacyToOpenTypeWeight(legacyWeight)));
+}
+
+/*!
+    \obsolete Use weight() instead.
+
+    Returns the weight of the font converted to the non-standard font
+    weight scale used in Qt 5 and earlier versions.
+
+    Since Qt 6, the OpenType standard's font weight scale is used instead
+    of a non-standard scale. This requires conversion from values that
+    use the old scale. For convenience, this function may be used when
+    porting from code which uses the old weight scale.
+
+    \sa setWeight(), weight(), QFontInfo
+*/
+int QFont::legacyWeight() const
+{
+    return qt_openTypeToLegacyWeight(weight());
+}
+#endif // QT_DEPRECATED_SINCE(6, 0)
+
 /*!
     Sets the weight of the font to \a weight, using the scale defined by
     \l QFont::Weight enumeration.
@@ -2599,6 +2639,28 @@ QFont::Style QFontInfo::style() const
     return (QFont::Style)engine->fontDef.style;
 }
 
+
+#if QT_DEPRECATED_SINCE(6, 0)
+/*!
+    \obsolete Use weight() instead.
+
+    Returns the weight of the font converted to the non-standard font
+    weight scale used in Qt 5 and earlier versions.
+
+    Since Qt 6, the OpenType standard's font weight scale is used instead
+    of a non-standard scale. This requires conversion from values that
+    use the old scale. For convenience, this function may be used when
+    porting from code which uses the old weight scale.
+
+    \sa setWeight(), weight(), QFontInfo
+*/
+int QFontInfo::legacyWeight() const
+{
+    return qt_openTypeToLegacyWeight(weight());
+}
+#endif // QT_DEPRECATED_SINCE(6, 0)
+
+
 /*!
     Returns the weight of the matched window system font.
 
diff --git a/src/gui/text/qfont.h b/src/gui/text/qfont.h
index 1ef0497d39..97b62b385e 100644
--- a/src/gui/text/qfont.h
+++ b/src/gui/text/qfont.h
@@ -275,6 +275,11 @@ public:
     inline uint resolveMask() const { return resolve_mask; }
     inline void setResolveMask(uint mask) { resolve_mask = mask; }
 
+#if QT_DEPRECATED_SINCE(6, 0)
+    QT_DEPRECATED_VERSION_X_6_0("Use setWeight() instead") void setLegacyWeight(int legacyWeight);
+    QT_DEPRECATED_VERSION_X_6_0("Use weight() instead") int legacyWeight() const;
+#endif
+
 private:
     explicit QFont(QFontPrivate *);
 
diff --git a/src/gui/text/qfontinfo.h b/src/gui/text/qfontinfo.h
index dfdac221cb..ed889c2fb5 100644
--- a/src/gui/text/qfontinfo.h
+++ b/src/gui/text/qfontinfo.h
@@ -73,6 +73,10 @@ public:
     bool fixedPitch() const;
     QFont::StyleHint styleHint() const;
 
+#if QT_DEPRECATED_SINCE(6, 0)
+    QT_DEPRECATED_VERSION_X_6_0("Use weight() instead") int legacyWeight() const;
+#endif
+
     bool exactMatch() const;
 
 private: