Web platform features explorer

rcap unit

The rcap CSS length unit is a font-relative length equal to the value of the cap unit on the root element. Cap-height is approximately equal to the height of a capital Latin letter.

Status

Limited availability

MDN documentation

Specifications

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 ❌
  • Firefox for Android ❌
  • Safari 17.2 Released on 2023-12-11
  • Safari on iOS 17.2 Released on 2023-12-11

Baseline availability blocked since December 2023 by Firefox (20 months)

Usage (according to Chrome Platform Status)

~0.001% of page loads. More data at chromestatus.

Web Platform Tests (WPT)

View the latest WPT test results for this feature

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