Hijri to Gregorian Converter
Pick a Hijri day, month and year to see the matching Gregorian date and weekday.
Reviewed by the ToolNestr Editorial Team — July 2026
How the converter works
The Hijri (Islamic) calendar and the Gregorian calendar count time differently. The Hijri year is lunar — twelve cycles of the moon totalling about 354 days — while the Gregorian year is solar, at roughly 365 days. Because of this 11-day gap, the same Hijri date lands on a different Gregorian date every year, drifting earlier through the seasons. This tool removes the guesswork by mapping any Hijri date you enter to its exact Gregorian equivalent.
Under the hood, the converter uses your browser’s built-in Umm al-Qura calendar — the official calculated Islamic calendar of Saudi Arabia. It searches for the Gregorian day whose Umm al-Qura date matches your input exactly, then reports that date along with the day of the week. Everything is computed locally, so your dates are never sent anywhere.
Use it to translate a birthday, an anniversary, a historical event or a religious occasion from the Islamic calendar into a date you can mark on a standard calendar. Because calculated calendars can differ from local moon-sighting by a day, treat the result as an accurate estimate and confirm critical dates with your local authority.
The Hijri months
Worked example
1 Ramadan 1446 AH converts to around 1 March 2025 CE — the likely first day of fasting that year, subject to local sighting.
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Frequently asked questions
How does the Hijri calendar work?
The Hijri calendar is lunar, with 12 months of 29 or 30 days and a year of about 354 days — roughly 11 days shorter than the Gregorian year. Months traditionally begin with the sighting of the new crescent moon.
Why can the converted date differ by a day?
Calculated calendars like Umm al-Qura may differ by a day from local moon-sighting, since the start of a month depends on whether the crescent is actually seen. Treat the result as a close estimate and verify important dates locally.
What is the Umm al-Qura calendar?
Umm al-Qura is the official calculated Islamic calendar of Saudi Arabia, widely used for administrative dates. This converter uses it through your browser’s internationalisation engine.
Does the Hijri calendar have leap years?
In tabular versions, 11 of every 30 years are leap years with an extra day in the last month. Umm al-Qura is based on astronomical calculation rather than a fixed leap pattern, so month lengths vary year to year.
Sources & references
This tool uses standard formulas and reference values from:
- • The Qur’an — e.g. Surah an-Nisa (4:11–12, 4:176) for the fixed inheritance shares (fara’id).
- • Sahih al-Bukhari & Sahih Muslim — hadith on inheritance, zakat and nisab thresholds.
- • AAOIFI and recognized fiqh councils (e.g. Islamic Fiqh Academy) for contemporary rulings. aaoifi.com
Rulings differ between scholars and schools (madhahib), and calculated astronomical times/dates may differ from local sighting. Confirm with a qualified scholar before acting.