diff --git a/features/interpolate-size.yml b/features/interpolate-size.yml
new file mode 100644
index 00000000000..7e70aa44247
--- /dev/null
+++ b/features/interpolate-size.yml
@@ -0,0 +1,10 @@
+name: interpolate-size
+description: The `interpolate-size` CSS property sets whether animations and transitions interpolate between a numeric value and a keyword value, such as from a fixed length to `auto` or `fit-content`.
+spec: https://drafts.csswg.org/css-values-5/#interpolate-size
+group:
+  - transitions
+  - animation
+compat_features:
+  - css.properties.interpolate-size
+  - css.properties.interpolate-size.allow-keywords
+  - css.properties.interpolate-size.numeric-only
diff --git a/features/interpolate-size.yml.dist b/features/interpolate-size.yml.dist
new file mode 100644
index 00000000000..ba96de8d994
--- /dev/null
+++ b/features/interpolate-size.yml.dist
@@ -0,0 +1,12 @@
+# Generated from: interpolate-size.yml
+# Do not edit this file by hand. Edit the source file instead!
+
+status:
+  baseline: false
+  support:
+    chrome: "129"
+    chrome_android: "129"
+compat_features:
+  - css.properties.interpolate-size
+  - css.properties.interpolate-size.allow-keywords
+  - css.properties.interpolate-size.numeric-only