Sizing

Easily make an element as wide or as tall (relative to its parent) with the width and height utilities.

Supported values

The sizing properties: width, height, minHeight, maxHeight, minWidth, and maxWidth are using the following custom transform function for the value:

function transform(value) {
  return value <= 1 && value !== 0 ? `${value * 100}%` : value;
}

If the value is between (0, 1], it's converted to percent. Otherwise, it is directly set on the CSS property.

Width 1/4

Width 300

Width 75%

Width 1

<Box sx={{ width: 1/4 }}> // Equivalent to width: '25%'
<Box sx={{ width: 300 }}> // Numbers are converted to pixel values.
<Box sx={{ width: '75%' }}> // String values are used as raw CSS.
<Box sx={{ width: 1 }}> // 100%

Width

Width 25%

Width 50%

Width 75%

Width 100%

Width auto

<Box sx={{ width: '25%' }}>…
<Box sx={{ width: '50%' }}>…
<Box sx={{ width: '75%' }}>…
<Box sx={{ width: '100%' }}>…
<Box sx={{ width: 'auto' }}>…

Max-width

The max-width property allows setting a constraint on your breakpoints. In this example, the value resolves to theme.breakpoints.values.md.

<Box sx={{ maxWidth: 'md' }}>…

Height

Height 25%

Height 50%

Height 75%

Height 100%

<Box sx={{ height: '25%' }}>…
<Box sx={{ height: '50%' }}>…
<Box sx={{ height: '75%' }}>…
<Box sx={{ height: '100%' }}>…

API

import { sizing } from '@mui/system';

Import name	Prop	CSS property	Theme key
`width`	`width`	`width`	none
`maxWidth`	`maxWidth`	`max-width`	`theme.breakpoints.values`
`minWidth`	`minWidth`	`min-width`	none
`height`	`height`	`height`	none
`maxHeight`	`maxHeight`	`max-height`	none
`minHeight`	`minHeight`	`min-height`	none
`boxSizing`	`boxSizing`	`box-sizing`	none