web-feature: ch unit

Widely available

The ch CSS length unit is a font-relative length based on the width of the zero (0) character.

WKWebView

macOS

*

iOS

*

Android WebView

Android

*

WebView2

Windows

*

WPE MiniBrowser

Linux

2026-07

Servo

Android

2026-07

ArkWeb

HarmonyOS

*

Chrome Browser

Android

27

Safari Browser

iOS

7