Calendar Converter

Convert a date between the Gregorian, Persian (Solar Hijri), Islamic, Hebrew, and Chinese calendars. The calendar converter shows the same day in all five at once.

Updated
Runs in your browser. Your data is not uploaded.

For the Chinese calendar, enter the Gregorian year the lunar year starts in.

Converted date
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How to use the Calendar Converter

  1. Choose the calendar to convert From.
  2. Enter the date: a Gregorian date, or the year, month, and day in the other calendar.
  3. Press Convert. The date appears in every other calendar, with the ISO date.

How it works

The converter uses your browser's built-in calendar data (the Unicode CLDR/ICU tables behind Intl.DateTimeFormat). From Gregorian, it reads the same day in each calendar. To go the other way, it finds the first day of the chosen year and walks through its months, so leap months such as Hebrew Adar I and Chinese leap months appear exactly as they are.

Examples

  • March 21, 2026 = 1 Farvardin 1405, Nowruz.
  • September 26, 2026 = 15 Rabiʻ II 1448 AH (Umm al-Qura), 4 Mehr 1405 SH, and 15 Tishri 5787 in the Hebrew calendar.
  • 1 Dey 1405 = December 22, 2026.

How the calendars differ

  • Persian (Solar Hijri): solar, the year starts at the March equinox. Official in Iran and Afghanistan.
  • Islamic (Umm al-Qura): lunar, about 354 days a year, used in Saudi Arabia.
  • Hebrew: lunisolar, adds a 13th month 7 times in 19 years.
  • Chinese: lunisolar, with leap months, used for festivals such as the Lunar New Year.

Limitations

  • Islamic dates follow the Umm al-Qura calendar. Countries that start months with a local moon sighting can differ by a day.
  • Results depend on your browser's calendar data; current browsers agree.
  • Gregorian years 1000 to 9999 are supported.

Frequently asked questions

How do I convert a Gregorian date to Persian?

Choose Gregorian, pick the date, and press Convert. The Persian date is shown first.

What is today's Hijri date?

Open the converter; it starts with today, and the Islamic date is in the list.

Why do Islamic dates sometimes differ by a day?

Some countries begin each month when the new moon is seen locally, instead of using the Umm al-Qura calculation.

Often used together with the Calendar Converter.