FormControl API

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

Component demos

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

Import

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

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

Provides context such as filled/focused/error/required for form inputs. Relying on the context provides high flexibility and ensures that the state always stays consistent across the children of the FormControl. This context is used by the following components:

FormLabel
FormHelperText
Input
InputLabel

You can find one composition example below and more going to the demos.

<FormControl>
  <InputLabel htmlFor="my-input">Email address</InputLabel>
  <Input id="my-input" aria-describedby="my-helper-text" />
  <FormHelperText id="my-helper-text">We'll never share your email.</FormHelperText>
</FormControl>

⚠️ Only one InputBase can be used within a FormControl because it creates visual inconsistencies. For instance, only one input can be focused at the same time, the state shouldn't be shared.

Props

Props of the native component are also available.

Name	Type	Default	Description
children	node	-	The content of the component.
classes	object	-	Override or extend the styles applied to the component. See CSS classes API below for more details.
color	'primary' \| 'secondary' \| 'error' \| 'info' \| 'success' \| 'warning' \| 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.
component	elementType	-	The component used for the root node. Either a string to use a HTML element or a component.
disabled	bool	false	If `true`, the label, input and helper text should be displayed in a disabled state.
error	bool	false	If `true`, the label is displayed in an error state.
focused	bool	-	If `true`, the component is displayed in focused state.
fullWidth	bool	false	If `true`, the component will take up the full width of its container.
hiddenLabel	bool	false	If `true`, the label is hidden. This is used to increase density for a `FilledInput`. Be sure to add `aria-label` to the `input` element.
margin	'dense' \| 'none' \| 'normal'	'none'	If `dense` or `normal`, will adjust vertical spacing of this and contained components.
required	bool	false	If `true`, the label will indicate that the `input` is required.
size	'medium' \| 'small' \| string	'medium'	The size of the component.
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.
variant	'filled' \| 'outlined' \| 'standard'	'outlined'	The variant to use.

The ref is forwarded to the root element.

Theme default props

You can use MuiFormControl 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
.MuiFormControl-fullWidth	fullWidth	Styles applied to the root element if `fullWidth={true}`.
.MuiFormControl-marginDense	marginDense	Styles applied to the root element if `margin="dense"`.
.MuiFormControl-marginNormal	marginNormal	Styles applied to the root element if `margin="normal"`.
.MuiFormControl-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.