Beta Preview

Calendar

A calendar displays one or more date grids and allows users to select a single date.

Theme

October 2025

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isDisabled 
Example
Calendar.tsx
Calendar.css
import {Calendar} from './Calendar';

<Calendar />

Value

Use the value or defaultValue prop to set the date value, using objects in the @internationalized/date package. This library supports parsing date strings in multiple formats, manipulation across international calendar systems, time zones, etc.

February 2020

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Selected date: Monday, February 3, 2020

import {parseDate, getLocalTimeZone} from '@internationalized/date';
import {useDateFormatter} from 'react-aria';
import {Calendar} from './Calendar';
import {useState} from 'react';

function Example() {
  let [date, setDate] = useState(parseDate('2020-02-03'));
  let formatter = useDateFormatter({ dateStyle: 'full' });
  
  return (
    <>
      <Calendar
        value={date}
        onChange={setDate}
      />
      <p>Selected date: {formatter.format(date.toDate(getLocalTimeZone()))}</p>
    </>
  );
}

International calendars

By default, Calendar displays the value using the calendar system for the user's locale. Use <I18nProvider> to override the calendar system by setting the Unicode calendar locale extension. The onChange event always receives a date in the same calendar as the value or defaultValue (Gregorian if no value is provided), regardless of the displayed locale.

शक 1946 माघ

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Locale
Calendar
import {I18nProvider} from 'react-aria-components';
import {parseDate} from '@internationalized/date';
import {Calendar} from './Calendar';

<I18nProvider locale="hi-IN-u-ca-indian">
  <Calendar defaultValue={parseDate('2025-02-03')} />
</I18nProvider>

Custom calendar systems

Calendar also supports custom calendar systems that implement custom business rules, for example a fiscal year calendar that follows a 4-5-4 format, where month ranges don't follow the usual Gregorian calendar. See the @internationalized/date docs for an example implementation.

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import type {AnyCalendarDate} from '@internationalized/date';
import {CalendarDate, startOfWeek, toCalendar, GregorianCalendar} from '@internationalized/date';
import {Calendar} from './Calendar';

export default (
  <Calendar
    firstDayOfWeek="sun"
    createCalendar={() => new Custom454()} />
);

// See @internationalized/date docs linked above.

Validation

Use the minValue and maxValue props to set the valid date range. The isDateUnavailable callback prevents certain dates from being selected. For custom validation rules, set the isInvalid prop and the errorMessage slot.

Appointment date, October 2025

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isInvalid 
 
import {isWeekend, today, getLocalTimeZone} from '@internationalized/date';
import {useLocale} from 'react-aria';
import {Calendar} from './Calendar';

function Example(props) {
  let {locale} = useLocale();
  let now = today(getLocalTimeZone());
  let disabledRanges = [
    [now, now.add({ days: 5 })],
    [now.add({ days: 14 }), now.add({ days: 16 })],
    [now.add({ days: 23 }), now.add({ days: 24 })]
  ];

  return (
    <Calendar
      {...props}
      aria-label="Appointment date"
      minValue={today(getLocalTimeZone())}
      isDateUnavailable={date => (
        isWeekend(date, locale) ||
        disabledRanges.some((interval) =>
          date.compare(interval[0]) >= 0 && date.compare(interval[1]) <= 0
        )
      )} />
  );
}

Display options

Set the visibleDuration prop and render multiple CalendarGrid elements to display more than one month at a time. The pageBehavior prop controls whether pagination advances by a single month or multiple. The firstDayOfWeek prop overrides the locale-specified first day of the week.

Appointment date, October to November 2025

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pageBehavior 
firstDayOfWeek 
import {Calendar, Heading} from 'react-aria-components';
import {CalendarGrid, CalendarCell} from './Calendar';
import {Button} from './Button';
import {useDateFormatter} from 'react-aria';
import {ChevronLeft, ChevronRight} from 'lucide-react';

// TODO: move this into the starter example.
function Example(props) {
  let monthFormatter = useDateFormatter({
    month: 'long',
    year: 'numeric',
    timeZone: 'UTC'
  });

  return (
    <Calendar
      {...props}
      aria-label="Appointment date"
      visibleDuration={{months: 2}}
      style={{display: 'flex', gap: 12, overflow: 'auto'}}
    >
      {({state}) => (
        [...Array(props.visibleDuration.months).keys()].map(i => (
          <div key={i} style={{flex: 1}}>
            <header style={{minHeight: 32}}>
              {i === 0 && 
                <Button slot="previous" variant="quiet">
                  <ChevronLeft />
                </Button>
              }
              <Heading>{monthFormatter.format(state.visibleRange.start.add({months: i}).toDate(state.timeZone))}</Heading>
              {i === props.visibleDuration.months - 1 && 
                <Button slot="next" variant="quiet">
                  <ChevronRight />
                </Button>
              }
            </header>
            <CalendarGrid offset={{months: i}}>
              {date => <CalendarCell date={date} />}
            </CalendarGrid>
          </div>
        ))
      )}
    </Calendar>
  );
}

Controlling the focused date

Use the focusedValue or defaultFocusedValue prop to control which date is focused. This controls which month is visible. The onFocusChange event is called when a date is focused by the user.

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import {Calendar} from './Calendar';
import {Button} from './Button';
import {CalendarDate, today, getLocalTimeZone} from '@internationalized/date';
import {useState} from 'react';

function Example() {
  let defaultDate = new CalendarDate(2021, 7, 1);
  let [focusedDate, setFocusedDate] = useState(defaultDate);

  return (
    <div>
      <Button
        style={{marginBottom: 20}}
        onPress={() => setFocusedDate(today(getLocalTimeZone()))}>
        Today
      </Button>
      <Calendar
        focusedValue={focusedDate}
        onFocusChange={setFocusedDate}
      />
    </div>
  );
}

Month and year pickers

You can also control the focused date via CalendarStateContext. This example shows month and year dropdown components that work inside any <Calendar>.

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Example
MonthDropdown.tsx
YearDropdown.tsx
import {Calendar} from 'react-aria-components';
import {CalendarGrid, CalendarCell} from './Calendar';
import {MonthDropdown} from './MonthDropdown';
import {YearDropdown} from './YearDropdown';
import {Button} from './Button';
import {ChevronLeft, ChevronRight} from 'lucide-react';

<Calendar>
  <header style={{display: 'flex', gap: 4}}>
    <Button slot="previous" variant="quiet">
      <ChevronLeft />
    </Button>
    <MonthDropdown />
    <YearDropdown />
    <Button slot="next" variant="quiet">
      <ChevronRight />
    </Button>
  </header>
  <CalendarGrid>
    {(date) => <CalendarCell date={date} />}
  </CalendarGrid>
</Calendar>

API

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