diff --git a/include/wx/font.h b/include/wx/font.h
index 5f9f70b2d0..4dc01f55e1 100644
--- a/include/wx/font.h
+++ b/include/wx/font.h
@@ -413,6 +413,10 @@ public:
     static wxFontEncoding GetDefaultEncoding() { return ms_encodingDefault; }
     static void SetDefaultEncoding(wxFontEncoding encoding);
 
+    // Convert between symbolic and numeric font weights.
+    static int GetNumericWeightOf(wxFontWeight weight);
+    static wxFontWeight GetWeightClosestToNumericValue(int numWeight);
+
     // this doesn't do anything and is kept for compatibility only
 #if WXWIN_COMPATIBILITY_2_8
     wxDEPRECATED_INLINE(void SetNoAntiAliasing(bool no = true), wxUnusedVar(no);)
diff --git a/interface/wx/font.h b/interface/wx/font.h
index f36d2a7de8..23cc879498 100644
--- a/interface/wx/font.h
+++ b/interface/wx/font.h
@@ -1221,6 +1221,34 @@ public:
     */
     static void SetDefaultEncoding(wxFontEncoding encoding);
 
+    /**
+        Get the raw weight value corresponding to the given symbolic constant.
+
+        For compatibility, this function handles the values @c wxNORMAL, @c
+        wxLIGHT and @c wxBOLD, that have values 90, 91 and 92, specially and
+        converts them to the corresponding @c wxFONTWEIGHT_XXX weight value.
+
+        @param weight
+            A valid element of wxFontWeight enum, i.e. this argument can't have
+            value ::wxFONTWEIGHT_INVALID.
+        @return Numeric weight, between 1 and 1000.
+
+        @since 3.1.2
+     */
+    static int GetNumericWeightOf(wxFontWeight weight);
+
+    /**
+        Get the symbolic weight closest to the given raw weight value.
+
+        @param numWeight
+            A valid raw weight value, i.e. a value in the range 1 to 1000,
+            inclusive.
+        @return A valid element of wxFontWeight enum.
+
+        @since 3.1.2
+     */
+    static wxFontWeight GetWeightClosestToNumericValue(int numWeight);
+
     //@{
     /**
         This function takes the same parameters as the relative
diff --git a/src/common/fontcmn.cpp b/src/common/fontcmn.cpp
index a0ef87bee7..66451ced9d 100644
--- a/src/common/fontcmn.cpp
+++ b/src/common/fontcmn.cpp
@@ -138,55 +138,6 @@ wxEMPTY_HANDLERS_TABLE(wxFont)
 // implementation
 // ============================================================================
 
-// ----------------------------------------------------------------------------
-// Local helpers
-// ----------------------------------------------------------------------------
-
-namespace
-{
-
-// Convert to/from wxFontWeight enum elements and numeric weight values.
-
-// This function interprets wxNORMAL, wxLIGHT and wxBOLD values in addition to
-// the actual wxFontWeight enum element values for compatibility. It does check
-// that it gets either the one or the other.
-int GetNumericWeightOf(wxFontWeight weight)
-{
-    // deal with compatibility constants
-    if (weight >= 90 && weight <= 92)
-    {
-        if (weight == 90 /* wxNORMAL */)
-            weight = wxFONTWEIGHT_NORMAL;
-        else if (weight == 91 /* wxLIGHT */)
-            weight = wxFONTWEIGHT_LIGHT;
-        else if (weight == 92 /* wxBOLD */)
-            weight = wxFONTWEIGHT_BOLD;
-    }
-
-    wxASSERT(weight > wxFONTWEIGHT_INVALID);
-    wxASSERT(weight <= wxFONTWEIGHT_MAX);
-    wxASSERT(weight % 100 == 0);
-
-    return weight;
-}
-
-// As its name indicates, this function returns the closest wxFontWeight enum
-// element, even if its value doesn't correspond to the given weight exactly.
-wxFontWeight GetWeightClosestToNumericValue(int numWeight)
-{
-    // round to nearest hundredth = wxFONTWEIGHT_ constant
-    int weight = ((numWeight + 50) / 100) * 100;
-
-    if (weight < wxFONTWEIGHT_THIN)
-        weight = wxFONTWEIGHT_THIN;
-    if (weight > wxFONTWEIGHT_MAX)
-        weight = wxFONTWEIGHT_MAX;
-
-    return static_cast<wxFontWeight>(weight);
-}
-
-} // anonymous namespace
-
 // ----------------------------------------------------------------------------
 // wxFontBase
 // ----------------------------------------------------------------------------
@@ -283,6 +234,53 @@ bool wxFontBase::IsFixedWidth() const
     return GetFamily() == wxFONTFAMILY_TELETYPE;
 }
 
+
+// Convert to/from wxFontWeight enum elements and numeric weight values.
+
+// This function interprets wxNORMAL, wxLIGHT and wxBOLD values in addition to
+// the actual wxFontWeight enum element values for compatibility. It does check
+// that it gets either the one or the other.
+/* static */
+int wxFontBase::GetNumericWeightOf(wxFontWeight weight)
+{
+    // deal with compatibility constants
+    if (weight >= 90 && weight <= 92)
+    {
+        if (weight == 90 /* wxNORMAL */)
+            weight = wxFONTWEIGHT_NORMAL;
+        else if (weight == 91 /* wxLIGHT */)
+            weight = wxFONTWEIGHT_LIGHT;
+        else if (weight == 92 /* wxBOLD */)
+            weight = wxFONTWEIGHT_BOLD;
+    }
+
+    wxASSERT(weight > wxFONTWEIGHT_INVALID);
+    wxASSERT(weight <= wxFONTWEIGHT_MAX);
+    wxASSERT(weight % 100 == 0);
+
+    return weight;
+}
+
+// As its name indicates, this function returns the closest wxFontWeight enum
+// element, even if its value doesn't correspond to the given weight exactly.
+/* static */
+wxFontWeight wxFontBase::GetWeightClosestToNumericValue(int numWeight)
+{
+    wxASSERT(numWeight > 0);
+    wxASSERT(numWeight <= 1000);
+
+    // round to nearest hundredth = wxFONTWEIGHT_ constant
+    int weight = ((numWeight + 50) / 100) * 100;
+
+    if (weight < wxFONTWEIGHT_THIN)
+        weight = wxFONTWEIGHT_THIN;
+    if (weight > wxFONTWEIGHT_MAX)
+        weight = wxFONTWEIGHT_MAX;
+
+    return static_cast<wxFontWeight>(weight);
+}
+
+
 int wxFontBase::GetPointSize() const
 {
     return wxRound(GetFractionalPointSize());
@@ -1332,12 +1330,12 @@ bool wxNativeFontInfo::FromUserString(const wxString& s)
 
 wxFontWeight wxNativeFontInfo::GetWeight() const
 {
-    return GetWeightClosestToNumericValue(GetNumericWeight());
+    return wxFontBase::GetWeightClosestToNumericValue(GetNumericWeight());
 }
 
 void wxNativeFontInfo::SetWeight(wxFontWeight weight)
 {
-    const int numWeight = GetNumericWeightOf(weight);
+    const int numWeight = wxFontBase::GetNumericWeightOf(weight);
     if ( numWeight != GetNumericWeight() )
         SetNumericWeight(numWeight);
 }