Hijri ↔ Gregorian Date Converter
Convert any date from Gregorian to Hijri or Hijri to Gregorian on the official Umm al-Qura calendar, with the weekday and the length of the Hijri month.
How it's calculated
The converter uses the Umm al-Qura calendar, the official Hijri calendar of Saudi Arabia, which is also what most Gulf apps, banks and government services show.
- Umm al-Qura months are fixed in advance from astronomical calculations, so every date can be converted exactly. The tables run from 1 Muharram 1343 AH (1 August 1924) to the end of 1500 AH (16 November 2077).
- A Hijri month has 29 or 30 days, and a Hijri year has 354 or 355, about 11 days shorter than a Gregorian year.
- Religious dates such as the start of Ramadan or Eid are announced from moon sightings and can differ by a day from the calendar, and from country to country.
The calendar data comes from the open-source hijridate library, which uses the official Umm al-Qura tables.
Frequently asked questions
Which Hijri calendar does it use?
Umm al-Qura, the official calendar of Saudi Arabia and the one most Gulf services show. Its months are calculated in advance, so every date converts exactly.
Why might Ramadan or Eid start on a different day?
Religious months are announced from moon sightings, which can differ by a day from the calendar and between countries. Check the official announcement for those dates.
Which years can I convert?
From 1 Muharram 1343 AH (1 August 1924) to the end of 1500 AH (16 November 2077), the range of the official Umm al-Qura tables.