r

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.

See full compatibility

The r attribute defines the radius of a circle.

You can use this attribute with the following SVG elements:

Percentages refer to the normalized diagonal of the current SVG viewport, which is calculated as $\frac{\sqrt{{<width>}^{2} + {<height>}^{2}}}{\sqrt{2}}$ .

Example

html,
body,
svg {
  height: 100%;
}

html

<svg viewBox="0 0 300 200" xmlns="http://www.w3.org/2000/svg">
  <radialGradient r="0" id="myGradient000">
    <stop offset="0" stop-color="white" />
    <stop offset="100%" stop-color="black" />
  </radialGradient>
  <radialGradient r="50%" id="myGradient050">
    <stop offset="0" stop-color="white" />
    <stop offset="100%" stop-color="black" />
  </radialGradient>
  <radialGradient r="100%" id="myGradient100">
    <stop offset="0" stop-color="white" />
    <stop offset="100%" stop-color="black" />
  </radialGradient>

  <circle cx="50" cy="50" r="0" />
  <circle cx="150" cy="50" r="25" />
  <circle cx="250" cy="50" r="50" />

  <rect x="20" y="120" width="60" height="60" fill="url(#myGradient000)" />
  <rect x="120" y="120" width="60" height="60" fill="url(#myGradient050)" />
  <rect x="220" y="120" width="60" height="60" fill="url(#myGradient100)" />
</svg>

circle

For <circle>, r defines the radius of the circle and therefore its size. With a value lower or equal to zero the circle won't be drawn at all.

Value	<length> \| <percentage>
Default value	`0`
Animatable	Yes

Note: The radius size of a <circle> can also be defined with the r geometry property.

radialGradient

For <radialGradient>, r defines the radius of the end circle for the radial gradient.

The gradient will be drawn such that the 100% gradient stop is mapped to the perimeter of this end circle. A value of lower or equal to zero will cause the area to be painted as a single color using the color and opacity of the last gradient <stop>.

Value	<length>
Default value	`50%`
Animatable	Yes

Specifications

Specification
Scalable Vector Graphics (SVG) 2 # RadialGradientElementRAttribute

Browser compatibility

svg.elements.circle.r

	desktop					mobile
	Chrome	Edge	Firefox	Opera	Safari	Chrome Android	Firefox for Android	Opera Android	Safari on iOS	Samsung Internet	WebView Android	WebView on iOS
`r`	Chrome – Full support Chrome 1 (Release date: 2008-12-11) footnote Full support	Edge – Full support Edge 12 (Release date: 2015-07-29) footnote Full support	Firefox – Full support Firefox 1.5 (Release date: 2005-11-29) footnote Full support	Opera – Full support Opera 15 (Release date: 2013-07-02) footnote Full support	Safari – Full support Safari 3 (Release date: 2007-10-26) footnote Full support	Chrome Android – Full support Chrome Android 18 (Release date: 2012-06-27) footnote Full support	Firefox for Android – Full support Firefox for Android 4 (Release date: 2011-03-29) footnote Full support	Opera Android – Full support Opera Android 14 (Release date: 2013-05-21) footnote Full support	Safari on iOS – Full support Safari on iOS 2 (Release date: 2008-07-11) footnote Full support	Samsung Internet – Full support Samsung Internet 1 (Release date: 2013-04-27) footnote Full support	WebView Android – Full support WebView Android 4.4 (Release date: 2013-12-09) footnote Full support	WebView on iOS – Full support WebView on iOS 2 (Release date: 2008-07-11) footnote Full support

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

Full support: Full support

svg.elements.radialGradient.r

	desktop					mobile
	Chrome	Edge	Firefox	Opera	Safari	Chrome Android	Firefox for Android	Opera Android	Safari on iOS	Samsung Internet	WebView Android	WebView on iOS
`r`	Chrome – Full support Chrome 1 (Release date: 2008-12-11) footnote Full support	Edge – Full support Edge 79 (Release date: 2020-01-15) footnote Full support	Firefox – Full support Firefox 1.5 (Release date: 2005-11-29) footnote Full support	Opera – Full support Opera 15 (Release date: 2013-07-02) footnote Full support	Safari – Full support Safari 3 (Release date: 2007-10-26) footnote Full support	Chrome Android – Full support Chrome Android 18 (Release date: 2012-06-27) footnote Full support	Firefox for Android – Full support Firefox for Android 4 (Release date: 2011-03-29) footnote Full support	Opera Android – Full support Opera Android 14 (Release date: 2013-05-21) footnote Full support	Safari on iOS – Full support Safari on iOS 2 (Release date: 2008-07-11) footnote Full support	Samsung Internet – Full support Samsung Internet 1 (Release date: 2013-04-27) footnote Full support	WebView Android – Full support WebView Android 4.4 (Release date: 2013-12-09) footnote Full support	WebView on iOS – Full support WebView on iOS 2 (Release date: 2008-07-11) footnote Full support

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

Full support: Full support

r

Legend

Legend