Hijri to Gregorian date converter

Convert a date either way using the Umm al-Qura calendar.

How the conversion works

The converter uses the Umm al-Qura calendar built into modern browsers. Umm al-Qura is the official calendar of Saudi Arabia, calculated in advance from astronomical data, and it is the reference for most official Hijri dates in the Gulf.

The Hijri calendar is lunar: each month has 29 or 30 days, and a year has 354 or 355 days. That is why Ramadan and Eid come about 11 days earlier each Gregorian year.

Worked examples

Example 1: an ID or residency expiry date

Some Saudi documents show Hijri dates. Enter the Hijri day, month and year to see the Gregorian date and weekday, so you can renew in time.

Example 2: planning for Ramadan

Enter 1 Ramadan 1448 to see that it falls on Monday 8 February 2027 by the calculated calendar. The confirmed start may differ by a day after the moon is sighted.

Example 3: your Hijri birthday

Enter your Gregorian date of birth to find your Hijri birth date, then use it to work out your age in Hijri years.

Example 4: Eid al-Adha 1448

Enter 10 Dhu al-Hijjah 1448 to see that Eid al-Adha falls on Sunday 16 May 2027 by the Umm al-Qura calendar. The Day of Arafah, 9 Dhu al-Hijjah, is Saturday 15 May 2027.

Example 5: how long Ramadan lasts

1 Ramadan 1448 is 8 February 2027 and 1 Shawwal 1448 is Tuesday 9 March 2027, so Ramadan 1448 has 29 days in the calculated calendar. The real length depends on the sighting of the Shawwal moon.

Example 6: a Gregorian date to Hijri

1 January 2027 is 23 Rajab 1448 AH. Use this direction to read a Gregorian deadline on a form that asks for a Hijri date.

Hijri year 1448 at a glance

First day of each month by the Umm al-Qura calendar:

The year 1448 has 355 days, and 1 Muharram 1449 falls on Sunday 6 June 2027. Ramadan, Shawwal and Dhu al-Hijjah may start a day later or earlier once the moon is sighted.

Where Hijri dates are used in the Gulf

• Saudi Arabia: Umm al-Qura is the official Hijri calendar, and many government documents, especially older IDs and residency permits, show Hijri dates.
• Religious dates everywhere: Ramadan, the two Eids, Hajj and the Islamic New Year.
• Zakat: the zakat year is a Hijri year. See the zakat calculator.
• Age: some forms ask for age in Hijri years. See the age calculator.

How to read a Hijri date

Hijri dates are written day, month, year, followed by "AH" in English or "هـ" in Arabic. Year 1 began with the Prophet's migration (Hijra) from Makkah to Madinah in 622 CE. There are no leap months: each month simply has 29 or 30 days, so a Hijri date falls on a different Gregorian date every year.

Common mistakes

• Expecting religious dates to match exactly. Moon sighting can shift the start of Ramadan, Shawwal and Dhu al-Hijjah by a day.
• Adding 579 or 622 years. The calendars run at different speeds, so a fixed gap does not work.
• Choosing day 30 in a 29-day month. The converter tells you when a month has only 29 days.
• Forgetting that the Islamic day starts at sunset. The converter, like official calendars, uses civil dates that change at midnight, so the evening before a religious date still shows the previous Hijri day.

Frequently asked questions

For official purposes, confirm dates with the issuing authority. Religious dates are confirmed by moon sighting.

Source: Umm al-Qura calendar (1356–1500 AH), as implemented in the browser's international calendar data.

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