Web platform features explorer - cap unit

Web platform features explorer

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

Status

Baseline Newly Available (since 2023-12-11)

This feature is expected to reach Baseline Widely Available status on: 2026-06-11

MDN documentation

Cap, in <length>

Specifications

CSS Values and Units Module Level 4 (#cap), from Cascading Style Sheets (CSS) Working Group (W3C).

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

Usage (according to Chrome Platform Status)

~0.011% of page loads. More data at chromestatus.

Web Platform Tests (WPT)

View the latest WPT test results for this feature

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