ic unitBaseline · Widely available
The ic CSS length unit corresponds to the width of CJK ideographic characters.
Supported in all major browsers for at least 30 months — safe to use without fallbacks. Baseline since Oct 3, 2022. Widely available since Apr 3, 2025.
Browser support
DesktopChrome
1–105Not supported
106+Supportedsince Sep 27, 2022
Current: 155Edge
12–105Not supported
106+Supportedsince Oct 3, 2022
Current: 154Firefox
1–96Not supported
97+Supportedsince Feb 8, 2022
Current: 157Safari
1–15.3Not supported
15.4+Supportedsince Mar 14, 2022
Current: 27MobileChrome Android
18–105Not supported
106+Supportedsince Sep 27, 2022
Current: 155Firefox Android
4–96Not supported
97+Supportedsince Feb 8, 2022
Current: 157Safari iOS
1–15.3Not supported
15.4+Supportedsince Mar 14, 2022
Current: 27How to use
This feature is Baseline widely available — use it freely, no fallback needed.
Example
Full syntax and examples are on MDN — see the links below.
Feature detection
There’s no simple runtime check for this feature; rely on the support table and test in your target browsers.