Which Hijri calendar does the converter use?

It uses the browser’s Intl implementation of the Islamic Umm al-Qura calendar, not a sighting-based calendar selected for your location.

Why can a Hijri date differ by one day?

Hijri calendars can follow calculated tables or local moon-sighting decisions. Religious and official dates should be checked against the authority relevant to you.

Does the conversion use the time of day?

No. The interface converts calendar dates at UTC midnight and does not model a Hijri day beginning at sunset.

Hijri ↔ Gregorian Converter

LocalFree

Convert dates between the Hijri Umm al-Qura and Gregorian calendars in either direction in your browser.

Gregorian → Hijri

Gregorian date

10 Rabiʿ al-Awwal 1448 AH

Hijri → Gregorian

Day

Month

Year (AH)

Sunday, August 23, 2026

Runs in your browser; files and input stay on this device

About the Hijri calendar

The Hijri calendar is a lunar calendar of 12 months and about 354 days, used across the Muslim world for religious dates like Ramadan and Hajj. This converter uses the Umm al-Qura calculation (the civil standard in Saudi Arabia) via your browser’s built-in calendar support, so conversions happen instantly with no server involved.

How to use Hijri ↔ Gregorian Converter

1For Gregorian to Hijri, choose a Gregorian date and read the Umm al-Qura result.
2For Hijri to Gregorian, enter the Hijri day, month, and year.
3Copy the displayed date only after checking it against the calendar required for your use case.

Frequently asked questions

Which Hijri calendar does the converter use?: It uses the browser’s Intl implementation of the Islamic Umm al-Qura calendar, not a sighting-based calendar selected for your location.
Why can a Hijri date differ by one day?: Hijri calendars can follow calculated tables or local moon-sighting decisions. Religious and official dates should be checked against the authority relevant to you.
Does the conversion use the time of day?: No. The interface converts calendar dates at UTC midnight and does not model a Hijri day beginning at sunset.