Radio

An easily stylable radio button component.

Best apple

FujiGalaGranny Smith

'use client';
import * as React from 'react';
import { Radio } from '@base-ui/react/radio';
import { RadioGroup } from '@base-ui/react/radio-group';
import styles from './index.module.css';

export default function ExampleRadioGroup() {
  const id = React.useId();
  return (
    <RadioGroup aria-labelledby={id} defaultValue="fuji-apple" className={styles.RadioGroup}>
      <div className={styles.Caption} id={id}>
        Best apple
      </div>

      <label className={styles.Item}>
        <Radio.Root value="fuji-apple" className={styles.Radio}>
          <Radio.Indicator className={styles.Indicator} />
        </Radio.Root>
        Fuji
      </label>

      <label className={styles.Item}>
        <Radio.Root value="gala-apple" className={styles.Radio}>
          <Radio.Indicator className={styles.Indicator} />
        </Radio.Root>
        Gala
      </label>

      <label className={styles.Item}>
        <Radio.Root value="granny-smith-apple" className={styles.Radio}>
          <Radio.Indicator className={styles.Indicator} />
        </Radio.Root>
        Granny Smith
      </label>
    </RadioGroup>
  );
}

Usage guidelines

Form controls must have an accessible name: It can be created using <label> elements, or the Field and Fieldset components. See Labeling a radio group and the forms guide.

Anatomy

Radio is always placed within Radio Group. Import the components and place them together:

Anatomy

import { Radio } from '@base-ui/react/radio';
import { RadioGroup } from '@base-ui/react/radio-group';

<RadioGroup>
  <Radio.Root>
    <Radio.Indicator />
  </Radio.Root>
</RadioGroup>

Examples

Labeling a radio group

Label the group with aria-labelledby and a sibling label element:

Using aria-labelledby to label a radio group

<div id="storage-type-label">Storage type</div>
<RadioGroup aria-labelledby="storage-type-label">{/* ... */}</RadioGroup>

An enclosing <label> is the simplest labeling pattern for each radio:

Using an enclosing label to label a radio button

<label>
  <Radio.Root value="ssd" />
  SSD
</label>

Rendering as a native button

By default, <Radio.Root> renders a <span> element to support enclosing labels. Prefer rendering each radio as a native button when using sibling labels (htmlFor/id).

Sibling label pattern with a native button

<div id="storage-type">Storage type</div>
<RadioGroup defaultValue="ssd" aria-labelledby="storage-type">
  <div>
    <label htmlFor="storage-type-ssd">SSD</label>
    <Radio.Root value="ssd" id="storage-type-ssd" nativeButton render={<button />}>
      <Radio.Indicator />
    </Radio.Root>
  </div>
</RadioGroup>

Native buttons with wrapping labels are supported by using the render callback to avoid invalid HTML, so the hidden input is placed outside the label:

Render callback

<div id="storage-type">Storage type</div>
<RadioGroup defaultValue="ssd" aria-labelledby="storage-type">
  <Radio.Root
    value="ssd"
    nativeButton
    render={(buttonProps) => (
      <label>
        <button {...buttonProps} />
        SSD
      </label>
    )}
  />
</RadioGroup>

Form integration

Use Field and Fieldset for group labeling and form integration:

Using Radio Group in a form

<Form>
  <Field.Root name="storageType">
    <Fieldset.Root render={<RadioGroup />}>
      <Fieldset.Legend>Storage type</Fieldset.Legend>
      <Field.Item>
        <Field.Label>
          <Radio.Root value="ssd" />
          SSD
        </Field.Label>
      </Field.Item>
      <Field.Item>
        <Field.Label>
          <Radio.Root value="hdd" />
          HDD
        </Field.Label>
      </Field.Item>
    </Fieldset.Root>
  </Field.Root>
</Form>

API reference

RadioGroup

Provides a shared state to a series of radio buttons. Renders a <div> element.

namestring—

Name: name
Description: Identifies the field when a form is submitted.
Type: string | undefined

defaultValueValue—

Name: defaultValue
Description: The uncontrolled value of the radio button that should be initially selected.

To render a controlled radio group, use the value prop instead.
Type: Value | undefined

valueValue—

Name: value
Description: The controlled value of the radio item that should be currently selected.

To render an uncontrolled radio group, use the defaultValue prop instead.
Type: Value | undefined

onValueChangefunction—

Name: onValueChange
Description: Callback fired when the value changes.
Type: | (( value: Value, eventDetails: RadioGroup.ChangeEventDetails, ) => void) | undefined

formstring—

Name: form
Description: Identifies the form that owns the radio inputs. Useful when the radio group is rendered outside the form.
Type: string | undefined

disabledbooleanfalse

Name: disabled
Description: Whether the component should ignore user interaction.
Type: boolean | undefined
Default: false

readOnlybooleanfalse

Name: readOnly
Description: Whether the user should be unable to select a different radio button in the group.
Type: boolean | undefined
Default: false

requiredbooleanfalse

Name: required
Description: Whether the user must choose a value before submitting a form.
Type: boolean | undefined
Default: false

inputRefReact.Ref<HTMLInputElement>—

Name: inputRef
Description: A ref to access the hidden input element.
Type: React.Ref<HTMLInputElement> | undefined

classNamestring | function—

Name: className
Description: CSS class applied to the element, or a function that returns a class based on the component’s state.
Type: | string | ((state: RadioGroup.State) => string | undefined) | undefined

styleReact.CSSProperties | function—

Name: style
Type: | React.CSSProperties | (( state: RadioGroup.State, ) => React.CSSProperties | undefined) | undefined

renderReactElement | function—

Name: render
Description: Allows you to replace the component’s HTML element with a different tag, or compose it with another component.

Accepts a ReactElement or a function that returns the element to render.
Type: | ReactElement | (( props: HTMLProps, state: RadioGroup.State, ) => ReactElement) | undefined

data-disabled

Present when the radio group is disabled.

Attribute	Description	-
`data-disabled`	Present when the radio group is disabled.

RadioGroup.PropsHide

Re-Export of RadioGroup props as RadioGroupProps

RadioGroup.StateHide

type RadioGroupState = {
  /** Whether the user should be unable to select a different radio button in the group. */
  readOnly: boolean;
  /** Whether the user must tick a radio button within the group before submitting a form. */
  required: boolean;
  /** Whether the component should ignore user interaction. */
  disabled: boolean;
  /** Whether the field has been touched. */
  touched: boolean;
  /** Whether the field value has changed from its initial value. */
  dirty: boolean;
  /** Whether the field is valid. */
  valid: boolean | null;
  /** Whether the field has a value. */
  filled: boolean;
  /** Whether the field is focused. */
  focused: boolean;
}

RadioGroup.ChangeEventReasonHide

type RadioGroupChangeEventReason = 'none'

RadioGroup.ChangeEventDetailsHide

type RadioGroupChangeEventDetails = {
  /** The reason for the event. */
  reason: 'none';
  /** The native event associated with the custom event. */
  event: Event;
  /** Cancels Base UI from handling the event. */
  cancel: () => void;
  /** Allows the event to propagate in cases where Base UI will stop the propagation. */
  allowPropagation: () => void;
  /** Indicates whether the event has been canceled. */
  isCanceled: boolean;
  /** Indicates whether the event is allowed to propagate. */
  isPropagationAllowed: boolean;
  /** The element that triggered the event, if applicable. */
  trigger: Element | undefined;
}

Root

Represents the radio button itself. Renders a <span> element and a hidden <input> beside.

value^*

Value

—

Name: value
Description: The unique identifying value of the radio in a group.
Type: Value

nativeButtonbooleanfalse

Name: nativeButton
Description: Whether the component renders a native <button> element when replacing it via the render prop. Set to true if the rendered element is a native button.
Type: boolean | undefined
Default: false

disabledboolean—

Name: disabled
Description: Whether the component should ignore user interaction.
Type: boolean | undefined

readOnlyboolean—

Name: readOnly
Description: Whether the user should be unable to select the radio button.
Type: boolean | undefined

requiredboolean—

Name: required
Description: Whether the user must choose a value before submitting a form.
Type: boolean | undefined

inputRefReact.Ref<HTMLInputElement>—

Name: inputRef
Description: A ref to access the hidden input element.
Type: React.Ref<HTMLInputElement> | undefined

classNamestring | function—

Name: className
Description: CSS class applied to the element, or a function that returns a class based on the component’s state.
Type: | string | ((state: Radio.Root.State) => string | undefined) | undefined

styleReact.CSSProperties | function—

Name: style
Type: | React.CSSProperties | (( state: Radio.Root.State, ) => React.CSSProperties | undefined) | undefined

renderReactElement | function—

Name: render
Description: Allows you to replace the component’s HTML element with a different tag, or compose it with another component.

Accepts a ReactElement or a function that returns the element to render.
Type: | ReactElement | (( props: HTMLProps, state: Radio.Root.State, ) => ReactElement) | undefined

data-checked

Present when the radio is checked.

data-unchecked

Present when the radio is not checked.

data-disabled

Present when the radio is disabled.

data-readonly

Present when the radio is readonly.

data-required

Present when the radio is required.

data-valid

Present when the radio is in valid state (when wrapped in Field.Root).

data-invalid

Present when the radio is in invalid state (when wrapped in Field.Root).

data-dirty

Present when the radio’s value has changed (when wrapped in Field.Root).

data-touched

Present when the radio has been touched (when wrapped in Field.Root).

data-filled

Present when the radio is checked (when wrapped in Field.Root).

data-focused

Present when the radio is focused (when wrapped in Field.Root).

Attribute	Description	-
`data-checked`	Present when the radio is checked.
`data-unchecked`	Present when the radio is not checked.
`data-disabled`	Present when the radio is disabled.
`data-readonly`	Present when the radio is readonly.
`data-required`	Present when the radio is required.
`data-valid`	Present when the radio is in valid state (when wrapped in Field.Root).
`data-invalid`	Present when the radio is in invalid state (when wrapped in Field.Root).
`data-dirty`	Present when the radio’s value has changed (when wrapped in Field.Root).
`data-touched`	Present when the radio has been touched (when wrapped in Field.Root).
`data-filled`	Present when the radio is checked (when wrapped in Field.Root).
`data-focused`	Present when the radio is focused (when wrapped in Field.Root).

Radio.Root.PropsHide

Re-Export of Root props as RadioRootProps

Radio.Root.StateHide

type RadioRootState = {
  /** Whether the radio button is currently selected. */
  checked: boolean;
  /** Whether the component should ignore user interaction. */
  disabled: boolean;
  /** Whether the user should be unable to select the radio button. */
  readOnly: boolean;
  /** Whether the user must choose a value before submitting a form. */
  required: boolean;
  /** Whether the field has been touched. */
  touched: boolean;
  /** Whether the field value has changed from its initial value. */
  dirty: boolean;
  /** Whether the field is valid. */
  valid: boolean | null;
  /** Whether the field has a value. */
  filled: boolean;
  /** Whether the field is focused. */
  focused: boolean;
}

Indicator

Indicates whether the radio button is selected. Renders a <span> element.

classNamestring | function—

Name: className
Description: CSS class applied to the element, or a function that returns a class based on the component’s state.
Type: | string | ((state: Radio.Indicator.State) => string | undefined) | undefined

styleReact.CSSProperties | function—

Name: style
Type: | React.CSSProperties | (( state: Radio.Indicator.State, ) => React.CSSProperties | undefined) | undefined

keepMountedbooleanfalse

Name: keepMounted
Description: Whether to keep the HTML element in the DOM when the radio button is inactive.
Type: boolean | undefined
Default: false

renderReactElement | function—

Name: render
Description: Allows you to replace the component’s HTML element with a different tag, or compose it with another component.

Accepts a ReactElement or a function that returns the element to render.
Type: | ReactElement | (( props: HTMLProps, state: Radio.Indicator.State, ) => ReactElement) | undefined

data-checked

Present when the radio is checked.

data-unchecked

Present when the radio is not checked.

data-disabled

Present when the radio is disabled.

data-readonly

Present when the radio is readonly.

data-required

Present when the radio is required.

data-valid

Present when the radio is in valid state (when wrapped in Field.Root).

data-invalid

Present when the radio is in invalid state (when wrapped in Field.Root).

data-dirty

Present when the radio’s value has changed (when wrapped in Field.Root).

data-touched

Present when the radio has been touched (when wrapped in Field.Root).

data-filled

Present when the radio is checked (when wrapped in Field.Root).

data-focused

Present when the radio is focused (when wrapped in Field.Root).

data-starting-style

Present when the radio indicator is animating in.

data-ending-style

Present when the radio indicator is animating out.

Attribute	Description	-
`data-checked`	Present when the radio is checked.
`data-unchecked`	Present when the radio is not checked.
`data-disabled`	Present when the radio is disabled.
`data-readonly`	Present when the radio is readonly.
`data-required`	Present when the radio is required.
`data-valid`	Present when the radio is in valid state (when wrapped in Field.Root).
`data-invalid`	Present when the radio is in invalid state (when wrapped in Field.Root).
`data-dirty`	Present when the radio’s value has changed (when wrapped in Field.Root).
`data-touched`	Present when the radio has been touched (when wrapped in Field.Root).
`data-filled`	Present when the radio is checked (when wrapped in Field.Root).
`data-focused`	Present when the radio is focused (when wrapped in Field.Root).
`data-starting-style`	Present when the radio indicator is animating in.
`data-ending-style`	Present when the radio indicator is animating out.

Radio.Indicator.PropsHide

Re-Export of Indicator props as RadioIndicatorProps

Radio.Indicator.StateHide

type RadioIndicatorState = {
  /** Whether the radio button is currently selected. */
  checked: boolean;
  /** The transition status of the component. */
  transitionStatus: TransitionStatus;
}