Web features explorer

cap unit

Widely Available (since 2026-06-11)

The cap CSS length unit corresponds to the height of Latin capital letters.

Browser support

  • Chrome 118 Released on 2023-10-10
  • Chrome Android 118 Released on 2023-10-10
  • Edge 118 Released on 2023-10-13
  • Firefox 97 Released on 2022-02-08
  • Firefox for Android 97 Released on 2022-02-08
  • Safari 17.2 Released on 2023-12-11
  • Safari on iOS 17.2 Released on 2023-12-11

MDN documentation

Specifications

Usage (according to Chrome Platform Status)

~0.022% of page loads. More data at chromestatus.com.

Web Platform Tests (WPT)

View the latest WPT test results for this feature

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