Number Input

The Number Input component provides users with a field for integer values, and buttons to increment or decrement the value.

NumberInput API

Import

import { Unstable_NumberInput as NumberInput } from '@mui/base/Unstable_NumberInput';
// or
import { Unstable_NumberInput as NumberInput } from '@mui/base';

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

Props

Props of the native component are also available.

defaultValue

The default value. Use when the component is not controlled.

Type:

any

disabled

If true, the component is disabled. The prop defaults to the value (false) inherited from the parent FormControl component.

Type:

bool

error

If true, the input will indicate an error by setting the aria-invalid attribute on the input and the Mui-error class on the root element.

Type:

bool

The id of the input element.

Type:

string

max

The maximum value.

Type:

number

min

The minimum value.

Type:

number

onChange

Callback fired after the value is clamped and changes - when the input is blurred or when the stepper buttons are triggered. Called with undefined when the value is unset.

Type:

func

Signature:

function(event: React.FocusEvent | React.PointerEvent | React.KeyboardEvent, value: number | undefined) => void

event The event source of the callback
value The new value of the component

onInputChange

Callback fired when the input value changes after each keypress, before clamping is applied. Note that event.target.value may contain values that fall outside of min and max or are otherwise "invalid".

Type:

func

Signature:

function(event: React.ChangeEvent) => void

event The event source of the callback.

readOnly

If true, the input element becomes read-only. The stepper buttons remain active, with the addition that they are now keyboard focusable.

Type:

bool

Default:

false

required

If true, the input element is required. The prop defaults to the value (false) inherited from the parent FormControl component.

Type:

bool

shiftMultiplier

Multiplier applied to step if the shift key is held while incrementing or decrementing the value. Defaults to 10.

Type:

number

slotProps

The props used for each slot inside the NumberInput.

Type:

{ decrementButton?: func | object, incrementButton?: func | object, input?: func | object, root?: func | object }

Default:

{}

slots

The components used for each slot inside the InputBase. Either a string to use a HTML element or a component.

See Slots API below for more details.

Type:

{ decrementButton?: elementType, incrementButton?: elementType, input?: elementType, root?: elementType }

Default:

{}

step

The amount that the value changes on each increment or decrement.

Type:

number

value

The current value. Use when the component is controlled.

Type:

any

The ref is forwarded to the root element.

Slots

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

root

The component that renders the root.

Default: 'div'

Global class: .MuiNumberInput-root

input

The component that renders the input.

Default: 'input'

Global class: .MuiNumberInput-input

incrementButton

The component that renders the increment button.

Default: 'button'

Global class: .MuiNumberInput-incrementButton

decrementButton

The component that renders the decrement button.

Default: 'button'

Global class: .MuiNumberInput-decrementButton

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.

CSS classes

These class names are useful for styling with CSS. They are applied to the root slot when specific states are triggered.

.Mui-disabledSTATE

Class name applied to the root element if disabled={true}.

.Mui-errorSTATE

State class applied to the root element if error={true}.

.Mui-focusedSTATE

Class name applied to the root element if the component is focused.

.MuiNumberInput-formControl

Class name applied to the root element if the component is a descendant of FormControl.

.MuiNumberInput-readOnly

State class applied to the root element if readOnly={true}.