diff --git a/lib/src/cli/arguments.dart b/lib/src/cli/arguments.dart
index 80ccab5..61a3933 100644
--- a/lib/src/cli/arguments.dart
+++ b/lib/src/cli/arguments.dart
@@ -43,6 +43,7 @@ const kOptionNames = EnumClass<CliArgument, String>({
   CliArgument.fontName: 'font-name',
   CliArgument.normalize: 'normalize',
   CliArgument.ignoreShapes: 'ignore-shapes',
+  CliArgument.fontWeight: 'font-weight',
 
   CliArgument.recursive: 'recursive',
   CliArgument.verbose: 'verbose',
@@ -90,6 +91,7 @@ enum CliArgument {
   fontName,
   ignoreShapes,
   normalize,
+  fontWeight,
 
   // Others
   recursive,
@@ -112,6 +114,7 @@ class CliArguments {
     this.fontName,
     this.recursive,
     this.ignoreShapes,
+    this.fontWeight,
     this.normalize,
     this.verbose,
     this.configFile,
@@ -134,6 +137,7 @@ class CliArguments {
       map[CliArgument.fontName] as String?,
       map[CliArgument.recursive] as bool?,
       map[CliArgument.ignoreShapes] as bool?,
+      int.tryParse((map[CliArgument.fontWeight] as String?) ?? ''),
       map[CliArgument.normalize] as bool?,
       map[CliArgument.verbose] as bool?,
       map[CliArgument.configFile] as File?,
@@ -149,6 +153,7 @@ class CliArguments {
   final String? fontName;
   final bool? recursive;
   final bool? ignoreShapes;
+  final int? fontWeight;
   final bool? normalize;
   final bool? verbose;
   final File? configFile;
diff --git a/lib/src/cli/options.dart b/lib/src/cli/options.dart
index ea2e9cd..0c84e3e 100644
--- a/lib/src/cli/options.dart
+++ b/lib/src/cli/options.dart
@@ -43,6 +43,11 @@ void defineOptions(ArgParser argParser) {
           'Enables glyph normalization for the font. Disable this if every icon has the same size and positioning.',
       defaultsTo: true,
     )
+    ..addOption(
+      kOptionNames[CliArgument.fontWeight]!,
+      help: 'Provide font weight (from 100 to 900).',
+      defaultsTo: '400',
+    )
     ..addFlag(
       kOptionNames[CliArgument.ignoreShapes]!,
       help: 'Disables SVG shape-to-path conversion (circle, rect, etc.).',
diff --git a/lib/src/common/api.dart b/lib/src/common/api.dart
index 47f568b..4bb0377 100644
--- a/lib/src/common/api.dart
+++ b/lib/src/common/api.dart
@@ -32,6 +32,7 @@ SvgToOtfResult svgToOtf({
   bool? ignoreShapes,
   bool? normalize,
   String? fontName,
+  int? fontWeight,
 }) {
   normalize ??= true;
 
@@ -59,6 +60,7 @@ SvgToOtfResult svgToOtf({
     glyphList: glyphList,
     fontName: fontName,
     normalize: normalize,
+    fontWeight: fontWeight,
     useOpenType: true,
     usePostV2: true,
   );
diff --git a/lib/src/otf/otf.dart b/lib/src/otf/otf.dart
index aa610c6..9d046aa 100644
--- a/lib/src/otf/otf.dart
+++ b/lib/src/otf/otf.dart
@@ -68,6 +68,7 @@ class OpenTypeFont implements BinaryCodable {
     bool? useOpenType,
     bool? usePostV2,
     bool? normalize,
+    int? fontWeight,
   }) {
     if (fontName?.isEmpty ?? false) {
       fontName = null;
@@ -136,7 +137,8 @@ class OpenTypeFont implements BinaryCodable {
     final maxp = MaximumProfileTable.create(fullGlyphList.length, glyf);
     final cmap = CharacterToGlyphTable.create(fullGlyphList);
     final gsub = GlyphSubstitutionTable.create();
-    final os2 = OS2Table.create(hmtx, head, hhea, cmap, gsub, achVendID);
+    final os2 = OS2Table.create(hmtx, head, hhea, cmap, gsub, achVendID,
+        fontWeight: fontWeight);
 
     final cff =
         useOpenType ? CFF1Table.create(fullGlyphList, head, hmtx, name) : null;
diff --git a/lib/src/otf/table/os2.dart b/lib/src/otf/table/os2.dart
index a91bedc..11460d1 100644
--- a/lib/src/otf/table/os2.dart
+++ b/lib/src/otf/table/os2.dart
@@ -149,6 +149,7 @@ class OS2Table extends FontTable {
     GlyphSubstitutionTable gsub,
     String achVendID, {
     int version = _kVersion5,
+    int? fontWeight,
   }) {
     final asciiAchVendID = achVendID.getAsciiPrintable();
 
@@ -180,7 +181,7 @@ class OS2Table extends FontTable {
         null,
         version,
         _getAverageWidth(hmtx),
-        400, // Regular weight
+        fontWeight ?? 400, // Regular weight
         5, // Normal width
         0, // Installable embedding
         scriptXsize,