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Accordion API

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


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


import Accordion from '@mui/material/Accordion';
// or
import { Accordion } from '@mui/material';
You can learn about the difference by reading this guide on minimizing bundle size.

Component name

The name MuiAccordion can be used when providing default props or style overrides in the theme.


Props of the Paper component are also available.

The content of the component.
Override or extend the styles applied to the component. See CSS API below for more details.
If true, expands the accordion by default.
If true, the component is disabled.
If true, it removes the margin between two expanded accordion items and the increase of height.
If true, expands the accordion, otherwise collapse it. Setting this prop enables control over the accordion.
Callback fired when the expand/collapse state is changed.

function(event: React.SyntheticEvent, expanded: boolean) => void
event: The event source of the callback. Warning: This is a generic event not a change event.
expanded: The expanded state of the accordion.
If true, rounded corners are disabled.
| 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.
The component used for the transition. Follow this guide to learn more about the requirements for this component.
Props applied to the transition element. By default, the element is based on this Transition component.

The ref is forwarded to the root element.


While not explicitly documented above, the props of the Paper component are also available on Accordion. You can take advantage of this to target nested components.


Rule nameGlobal classDescription
root.MuiAccordion-rootStyles applied to the root element.
rounded.MuiAccordion-roundedStyles applied to the root element unless square={true}.
expanded.Mui-expandedState class applied to the root element if expanded={true}.
disabled.Mui-disabledState class applied to the root element if disabled={true}.
gutters.MuiAccordion-guttersStyles applied to the root element unless disableGutters={true}.
region.MuiAccordion-regionStyles applied to the region element, the container of the children.

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