LinearProgress API

API reference docs for the React LinearProgress component. Learn about the props, CSS, and other APIs of this exported module.

Demos

For examples and details on the usage of this React component, visit the component demo pages:

Progress

Import

import LinearProgress from '@mui/material/LinearProgress';
// or
import { LinearProgress } from '@mui/material';

Learn about the difference by reading this guide on minimizing bundle size.

ARIA

If the progress bar is describing the loading progress of a particular region of a page, you should use aria-describedby to point to the progress bar, and set the aria-busy attribute to true on that region until it has finished loading.

Props

Props of the native component are also available.

Name	Type	Default	Description
classes	object	-	Override or extend the styles applied to the component. See CSS classes API below for more details.
color	'inherit' \| 'primary' \| 'secondary' \| string	'primary'	The color of the component. It supports both default and custom theme colors, which can be added as shown in the palette customization guide.
sx	Array<func \| object \| bool> \| func \| object	-	The system prop that allows defining system overrides as well as additional CSS styles. See the `sx` page for more details.
value	number	-	The value of the progress indicator for the determinate and buffer variants. Value between 0 and 100.
valueBuffer	number	-	The value for the buffer variant. Value between 0 and 100.
variant	'buffer' \| 'determinate' \| 'indeterminate' \| 'query'	'indeterminate'	The variant to use. Use indeterminate or query when there is no progress value.

The ref is forwarded to the root element.

Theme default props

You can use MuiLinearProgress to change the default props of this component with the theme.

CSS classes

These class names are useful for styling with CSS. They are applied to the component's slots when specific states are triggered.

Class name	Rule name	Description
.MuiLinearProgress-bar	bar	Styles applied to the layered bar1 and bar2 elements.
.MuiLinearProgress-bar1Buffer	bar1Buffer	Styles applied to the bar1 element if `variant="buffer"`.
.MuiLinearProgress-bar1Determinate	bar1Determinate	Styles applied to the bar1 element if `variant="determinate"`.
.MuiLinearProgress-bar1Indeterminate	bar1Indeterminate	Styles applied to the bar1 element if `variant="indeterminate or query"`.
.MuiLinearProgress-bar2Buffer	bar2Buffer	Styles applied to the bar2 element if `variant="buffer"`.
.MuiLinearProgress-bar2Indeterminate	bar2Indeterminate	Styles applied to the bar2 element if `variant="indeterminate or query"`.
.MuiLinearProgress-barColorPrimary	barColorPrimary	Styles applied to the bar elements if `color="primary"`; bar2 if `variant` not "buffer".
.MuiLinearProgress-barColorSecondary	barColorSecondary	Styles applied to the bar elements if `color="secondary"`; bar2 if `variant` not "buffer".
.MuiLinearProgress-buffer	buffer	Styles applied to the root element if `variant="buffer"`.
.MuiLinearProgress-colorPrimary	colorPrimary	Styles applied to the root and bar2 element if `color="primary"`; bar2 if `variant="buffer"`.
.MuiLinearProgress-colorSecondary	colorSecondary	Styles applied to the root and bar2 elements if `color="secondary"`; bar2 if `variant="buffer"`.
.MuiLinearProgress-dashed	dashed	Styles applied to the additional bar element if `variant="buffer"`.
.MuiLinearProgress-dashedColorPrimary	dashedColorPrimary	Styles applied to the additional bar element if `variant="buffer"` and `color="primary"`.
.MuiLinearProgress-dashedColorSecondary	dashedColorSecondary	Styles applied to the additional bar element if `variant="buffer"` and `color="secondary"`.
.MuiLinearProgress-determinate	determinate	Styles applied to the root element if `variant="determinate"`.
.MuiLinearProgress-indeterminate	indeterminate	Styles applied to the root element if `variant="indeterminate"`.
.MuiLinearProgress-query	query	Styles applied to the root element if `variant="query"`.
.MuiLinearProgress-root	root	Styles applied to the root element.

You can override the style of the component using one of these customization options:

With a global class name.
With a rule name as part of the component's styleOverrides property in a custom theme.

Source code

If you did not find the information in this page, consider having a look at the implementation of the component for more detail.