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LinearProgress API

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

Component demos

Import

import LinearProgress from '@mui/joy/LinearProgress';
// or
import { LinearProgress } from '@mui/joy';
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.

color

The color of the component. It supports those theme colors that make sense for this component.

To learn how to add your own colors, check out Themed components—Extend colors.

Type:'danger'
| 'neutral'
| 'primary'
| 'success'
| 'warning'
| string

Default:'primary'

component

The component used for the root node. Either a string to use a HTML element or a component.

Type:elementType

determinate

The boolean to select a variant. Use indeterminate when there is no progress value.

Type:bool

Default:false

size

The size of the component. It accepts theme values between 'sm' and 'lg'.

To learn how to add custom sizes to the component, check out Themed components—Extend sizes.

Type:'sm'
| 'md'
| 'lg'
| string

Default:'md'

slotProps

The props used for each slot inside.

Type:{ root?: func
| object }

Default:{}

slots

The components used for each slot inside.

See Slots API below for more details.

Type:{ root?: elementType }

Default:{}

sx

The system prop that allows defining system overrides as well as additional CSS styles.

See the `sx` page for more details.

Type:Array<func
| object
| bool>
| func
| object

thickness

The thickness of the bar.

Type:number

value

The value of the progress indicator for the determinate variant. Value between 0 and 100.

Type:number

Default:determinate ? 0 : 25

variant

The global variant to use.

To learn how to add your own variants, check out Themed components—Extend variants.

Type:'outlined'
| 'plain'
| 'soft'
| 'solid'
| string

Default:'soft'

The ref is forwarded to the root element.

Theme default props

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

Slots

To learn how to customize the slot, check out the Overriding component structure guide.

root

The component that renders the root.

Class name: .MuiLinearProgress-root

Default component: 'div'

CSS classes

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

.MuiLinearProgress-colorContext

Class name applied to the root element when color inversion is triggered.

Rule name:colorContext

.MuiLinearProgress-colorDanger

Class name applied to the root element if color="danger".

Rule name:colorDanger

.MuiLinearProgress-colorNeutral

Class name applied to the root element if color="neutral".

Rule name:colorNeutral

.MuiLinearProgress-colorPrimary

Class name applied to the root element if color="primary".

Rule name:colorPrimary

.MuiLinearProgress-colorSuccess

Class name applied to the root element if color="success".

Rule name:colorSuccess

.MuiLinearProgress-colorWarning

Class name applied to the root element if color="warning".

Rule name:colorWarning

.MuiLinearProgress-determinate

Class name applied to the root element if determinate is true.

Rule name:determinate

.MuiLinearProgress-sizeLg

Class name applied to the root element if size="lg".

Rule name:sizeLg

.MuiLinearProgress-sizeMd

Class name applied to the root element if size="md".

Rule name:sizeMd

.MuiLinearProgress-sizeSm

Class name applied to the root element if size="sm".

Rule name:sizeSm

.MuiLinearProgress-variantOutlined

Class name applied to the root element if variant="outlined".

Rule name:variantOutlined

.MuiLinearProgress-variantPlain

Class name applied to the root element if variant="plain".

Rule name:variantPlain

.MuiLinearProgress-variantSoft

Class name applied to the root element if variant="soft".

Rule name:variantSoft

.MuiLinearProgress-variantSolid

Class name applied to the root element if variant="solid".

Rule name:variantSolid


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