Umm al-Qura · Islamic calendar
Gregorian to Hijri Date Converter
Convert dates between the Gregorian calendar and the Hijri (Umm al-Qura) calendar — the official Islamic calendar of Saudi Arabia. Free, instant, two-way conversion.
How is this calculated?
Conversion uses the Intl islamic-umalqura calendar (the official Saudi system). Day boundaries are based on sunset in Makkah; small ±1 day variance is normal.
Notes
- The Umm al-Qura calendar is the official Hijri calendar in Saudi Arabia. JavaScript uses Intl.DateTimeFormat with the islamic-umalqura locale to perform the conversion.
- Source: Umm Al-Qura Calendar
- These calculators are for informational purposes only and are not financial, tax, legal, or professional advice. Verify the result with an official source or qualified advisor.
A two-way date converter between the Gregorian calendar and the Islamic (Hijri) calendar, using the Umm al-Qura system — the official Hijri calendar adopted in Saudi Arabia. Useful for converting public holidays, school terms, contract dates, and religious milestones (Ramadan start, Hajj season).
How to use this calculator
- 1 Pick a direction: Gregorian → Hijri, or Hijri → Gregorian.
- 2 Enter the day, month, and year in the source calendar.
- 3 The converted date in the target calendar appears instantly, with both dates shown for cross-reference.
Frequently asked questions
How do I convert Gregorian to Hijri?
Use the "Gregorian → Hijri" direction above. Pick the Gregorian date (day, month, year) — the Hijri equivalent appears immediately. The conversion uses the official Umm al-Qura calendar, the same one used by Saudi government services.
What is the Umm al-Qura calendar?
Umm al-Qura (أم القرى) is the official Hijri calendar of Saudi Arabia, published by the King Abdulaziz City for Science and Technology. Unlike purely astronomical Hijri calendars, Umm al-Qura uses a table-based system with a small set of month-length rules, which makes it predictable for civil use.
Why does my conversion differ from a different site by one day?
Some sites use an astronomical Hijri calendar (based on the new moon sighting) while others use Umm al-Qura. The astronomical calendar can be up to two days different from Umm al-Qura for the same Gregorian date. This calculator uses Umm al-Qura, which is the standard in Saudi Arabia.
What Hijri year are we in right now?
The current Hijri year in 2026 is around 1447–1448 AH. The exact Gregorian-to-Hijri mapping changes throughout the year. Use the converter above to find the precise Hijri date for any Gregorian date.