Hijri ⇄ Gregorian date converter
Muslims use the Hijri calendar for religious occasions such as Ramadan, the two Eids and Hajj, while daily life in most countries runs on the Gregorian calendar. So you often need to convert between them: to find your birthday in Hijri, work out when an Islamic occasion falls, or fill in an official form that asks for the Hijri date. This tool converts any date in either direction instantly.
How to use it
- Today's date in both calendars appears at the top.
- Choose the direction: Gregorian to Hijri or the reverse.
- Enter the date; picking a Gregorian date shows the result immediately.
- To convert from Hijri, choose the day and month, type the Hijri year and click “Convert date”.
What is the Umm al-Qura calendar?
Umm al-Qura is Saudi Arabia's official Hijri calendar. It uses astronomical calculations of sunset and moonset in Makkah to set the start of each month, and it's the most widely used Hijri calendar in apps and websites. The “tabular Islamic calendar” instead uses a fixed rule of alternating 30- and 29-day months with leap years and is used in some historical calculations.
Note: in many countries the start of Hijri months is set by moon sighting, so the actual date where you live may differ by one day from the calculation — especially at the start of Ramadan, Shawwal and Dhu al-Hijjah.
The Hijri months
| # | Month | Occasions |
|---|---|---|
| 1 | Muharram | Islamic New Year, Ashura (10 Muharram) |
| 3 | Rabi al-Awwal | Mawlid (12 Rabi al-Awwal) |
| 7 | Rajab | One of the sacred months |
| 9 | Ramadan | Month of fasting, Laylat al-Qadr |
| 10 | Shawwal | Eid al-Fitr (1 Shawwal) |
| 12 | Dhu al-Hijjah | Day of Arafah (9) and Eid al-Adha (10) |
Hijri vs Gregorian years
The Hijri year is lunar, with 12 months of 29 or 30 days — about 354 or 355 days in total, roughly 11 days shorter than the solar Gregorian year. That's why Islamic occasions move about 11 days earlier each Gregorian year, and Ramadan cycles through every season in about 33 years. To find your age in Hijri years, use the Age Calculator.
Frequently Asked Questions
How do I find my birthday in Hijri?
Choose “Gregorian → Hijri” and enter your date of birth; the Hijri date appears immediately.
Why do websites differ by one day?
Some countries rely on moon sighting and others on astronomical calculation, and different calendars (Umm al-Qura or tabular) are used.
What date range is supported?
Roughly 1300–1600 AH, the range covered by the Umm al-Qura calendar in browsers.
How many days are in a Hijri month?
Either 29 or 30 days depending on the lunar cycle — never 31.
Does it work offline?
Yes, once the page has loaded, because conversion uses the calendar engine built into your browser.
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