<calc> | CSS Types & Functions

Allows you to perform calculations when specifying CSS property values. You can mix different units, like percentages and pixels, in the same expression.

Quick example

.container {
  width: calc(100% - 80px);
  /* mixes percentage and pixels */
}

<calc> Browser Support

Widely available Since 2015 96% global usage

This feature is well established and works across many devices and browser versions. It has been available across browsers since 2015.

Safe to use without fallbacks.

View on caniuse.com → View on MDN → View on webstatus.dev → View spec → Learn more about Baseline →

26+

16+

12+