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---
title: patternUnits
slug: Web/SVG/Attribute/patternUnits
page-type: svg-attribute
browser-compat: svg.elements.pattern.patternUnits
---
{{SVGRef}}
The **`patternUnits`** attribute indicates which coordinate system to use for the geometry properties of the {{ SVGElement("pattern") }} element.
You can use this attribute with the following SVG elements:
- {{SVGElement('pattern')}}
## Example
```css hidden
html,
body,
svg {
height: 100%;
}
```
```html
<svg viewBox="0 0 200 100" xmlns="http://www.w3.org/2000/svg">
<!-- All geometry properties are relative to the current user space -->
<pattern
id="p1"
x="12.5"
y="12.5"
width="25"
height="25"
patternUnits="userSpaceOnUse">
<circle cx="10" cy="10" r="10" />
</pattern>
<!-- All geometry properties are relative to the target bounding box -->
<pattern
id="p2"
x=".125"
y=".125"
width=".25"
height=".25"
patternUnits="objectBoundingBox">
<circle cx="10" cy="10" r="10" />
</pattern>
<!-- Left square with user space tiles -->
<rect x="10" y="10" width="80" height="80" fill="url(#p1)" />
<!-- Right square with bounding box tiles -->
<rect x="110" y="10" width="80" height="80" fill="url(#p2)" />
</svg>
```
{{EmbedLiveSample("Example", '100%', 200)}}
## pattern
For {{SVGElement('pattern')}}, `patternUnits` defines the coordinate system in use for the geometry properties ({{ SVGAttr("x") }}, {{ SVGAttr("y") }}, {{ SVGAttr("width") }} and {{ SVGAttr("height") }}) of the element.
<table class="properties">
<tbody>
<tr>
<th scope="row">Value</th>
<td><code>userSpaceOnUse</code> | <code>objectBoundingBox</code></td>
</tr>
<tr>
<th scope="row">Default value</th>
<td><code>objectBoundingBox</code></td>
</tr>
<tr>
<th scope="row">Animatable</th>
<td>Yes</td>
</tr>
</tbody>
</table>
- `userSpaceOnUse`
- : This value indicates that all coordinates for the geometry properties refer to the user coordinate system as defined when the pattern was applied.
- `objectBoundingBox`
- : This value indicates that all coordinates for the geometry properties represent fractions or percentages of the bounding box of the element to which the pattern is applied. A bounding box could be considered the same as if the content of the {{ SVGElement("pattern") }} were bound to a "`0 0 1 1`" {{ SVGAttr("viewBox") }}.
## Specifications
{{Specifications}}
## Browser compatibility
{{Compat}}