Web features explorer - progress()

Web features explorer

The progress() CSS function returns a ratio for the relative position of one value between two other values, clamped between 0 and 1. You can use it to interpolate a value for other calculations.

Browser support

Chrome 138 Released on 2025-06-24
Chrome Android 138 Released on 2025-06-24
Edge 138 Released on 2025-06-26
Firefox Not supported Bugs: 1975530
Firefox for Android Not supported Bugs: 1975530
Safari 26 Released on 2025-09-15
Safari on iOS 26 Released on 2025-09-15

Baseline availability blocked since September 2025 by Firefox (10 months)

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MDN documentation

`progress()` CSS function

Specifications

CSS Values and Units Module Level 5 (#progress), from Cascading Style Sheets (CSS) Working Group (W3C).

Web Platform Tests (WPT)

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