diff --git a/.changeset/thirty-spoons-flow.md b/.changeset/thirty-spoons-flow.md
new file mode 100644
index 0000000..2751fee
--- /dev/null
+++ b/.changeset/thirty-spoons-flow.md
@@ -0,0 +1,5 @@
+---
+'@tokens-studio/sd-transforms': patch
+---
+
+Fix fontWeights transformer to allow spaces within fontWeights.
diff --git a/src/transformFontWeights.ts b/src/transformFontWeights.ts
index 0904e31..03b8281 100644
--- a/src/transformFontWeights.ts
+++ b/src/transformFontWeights.ts
@@ -1,5 +1,5 @@
 export const fontWeightMap = {
-  hairline: 1,
+  hairline: 100,
   thin: 100,
   extralight: 200,
   ultralight: 200,
@@ -18,13 +18,15 @@ export const fontWeightMap = {
   bold: 700,
   dreiviertelfett: 700,
   extrabold: 800,
-  ultabold: 800,
+  ultrabold: 800,
   fett: 800,
   black: 900,
   heavy: 900,
   super: 900,
   extrafett: 900,
-  ultra: 1000,
+  ultra: 950,
+  ultrablack: 950,
+  extrablack: 950,
 };
 
 export const fontStyles = ['italic', 'oblique', 'normal'];
@@ -45,8 +47,9 @@ export function transformFontWeights(
   const match = `${value}`.match(fontWeightReg);
 
   let mapped;
+
   if (match?.groups?.weight) {
-    mapped = fontWeightMap[match?.groups?.weight.toLowerCase()];
+    mapped = fontWeightMap[match?.groups?.weight.replace(/\s/g, '').toLowerCase()];
     if (match.groups.style) {
       mapped = `${mapped} ${match.groups.style.toLowerCase()}`;
     }
diff --git a/test/spec/transformFontWeights.spec.ts b/test/spec/transformFontWeights.spec.ts
index c20edfa..dfa0e67 100644
--- a/test/spec/transformFontWeights.spec.ts
+++ b/test/spec/transformFontWeights.spec.ts
@@ -24,4 +24,9 @@ describe('transform dimension', () => {
     expect(transformFontWeights('Light normal')).to.equal(`300 normal`);
     expect(transformFontWeights('ExtraBold Italic')).to.equal(`800 italic`);
   });
+
+  it('supports fontWeights with space separators', () => {
+    expect(transformFontWeights('Extra Bold')).to.equal(800);
+    expect(transformFontWeights('Ultra Black Italic')).to.equal(`950 italic`);
+  });
 });