<length-percentage>

Baseline Widely available

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

The <length-percentage> CSS data type represents a value that can be either a <length> or a <percentage>.

Syntax

Refer to the documentation for <length> and <percentage> for details of the individual syntaxes allowed by this type.

Formal syntax

<length-percentage> = 
<length> |
<percentage>

Examples

length-percentage examples

The following simple example demonstrates several properties that use <length-percentage> values.

HTML

html
<p>You can use percentages and lengths in so many places.</p>

CSS

css
p {
  /* length-percentage examples */
  width: 75%;
  height: 200px;
  margin: 3rem;
  padding: 1%;
  border-radius: 10px 10%;
  font-size: 250%;
  line-height: 1.5em;

  /* length examples */
  text-shadow: 1px 1px 1px red;
  border: 5px solid red;
  letter-spacing: 3px;

  /* percentage example */
  text-size-adjust: 20%;
}

Result

Use in calc()

Where a <length-percentage> is specified as an allowable type, this means that the percentage resolves to a length and therefore can be used in a calc() expression. Therefore, all of the following values are acceptable for width:

css
width: 200px;
width: 20%;
width: calc(100% - 200px);

Specifications

Specification
CSS Values and Units Module Level 4
# mixed-percentages

Browser compatibility

Report problems with this compatibility data on GitHub
desktopmobile
Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
WebView on iOS
<length-percentage>

Legend

Tip: you can click/tap on a cell for more information.

Full support
Full support

See also