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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.

NameTypeDefaultDescription
color'danger'
| 'neutral'
| 'primary'
| 'success'
| 'warning'
| string
'primary'

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.

componentelementType-

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

determinateboolfalse

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

size'sm'
| 'md'
| 'lg'
| string
'md'

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.

slotProps{ root?: func
| object }
{}

The props used for each slot inside.

slots{ root?: elementType }{}

The components used for each slot inside.

See Slots API below for more details.

sxArray<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.

thicknessnumber-

The thickness of the bar.

valuenumberdeterminate ? 0 : 25

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

variant'outlined'
| 'plain'
| 'soft'
| 'solid'
| string
'soft'

The global variant to use.

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

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.

Slot nameClass nameDefault componentDescription
root.MuiLinearProgress-root'div'The component that renders the root.

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 nameRule nameDescription
.MuiLinearProgress-colorContextcolorContextClass name applied to the root element when color inversion is triggered.
.MuiLinearProgress-colorDangercolorDangerClass name applied to the root element if color="danger".
.MuiLinearProgress-colorNeutralcolorNeutralClass name applied to the root element if color="neutral".
.MuiLinearProgress-colorPrimarycolorPrimaryClass name applied to the root element if color="primary".
.MuiLinearProgress-colorSuccesscolorSuccessClass name applied to the root element if color="success".
.MuiLinearProgress-colorWarningcolorWarningClass name applied to the root element if color="warning".
.MuiLinearProgress-determinatedeterminateClass name applied to the root element if determinate is true.
.MuiLinearProgress-sizeLgsizeLgClass name applied to the root element if size="lg".
.MuiLinearProgress-sizeMdsizeMdClass name applied to the root element if size="md".
.MuiLinearProgress-sizeSmsizeSmClass name applied to the root element if size="sm".
.MuiLinearProgress-variantOutlinedvariantOutlinedClass name applied to the root element if variant="outlined".
.MuiLinearProgress-variantPlainvariantPlainClass name applied to the root element if variant="plain".
.MuiLinearProgress-variantSoftvariantSoftClass name applied to the root element if variant="soft".
.MuiLinearProgress-variantSolidvariantSolidClass name applied to the root element if variant="solid".

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