Gregorian to Hijri date converter
Pick a Gregorian date to see the matching Hijri date in Umm al-Qura, the calendar used for official business in Saudi Arabia.
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Processing and privacy: The result is calculated inside your browser and your data is not sent to any server.
How to use it
- Enter gregorian date.
- The result appears straight away and updates as you edit.
- Copy the result, or copy a link that keeps the same values to share it.
How it is calculated
The date is read from the Umm al-Qura table built into the browser (the Intl islamic-umalqura calendar), a precomputed list of month starts for 1300 to 1600 AH.
Example
Inputs: Gregorian date = 2026-02-18. Result: Hijri date (Umm al-Qura): 1 Ramadan 1447 AH; Numeric (day/month/year): 01/09/1447; Weekday: Wednesday.
Limits and caveats
- Umm al-Qura is covered here from 1300 to 1600 AH (November 1882 to November 2174).
- Ramadan and Eid are announced by moon sighting and can differ by a day from Umm al-Qura.
Questions about this tool
What is the Umm al-Qura calendar?
It is the official Hijri calendar of Saudi Arabia, with month starts calculated in advance from astronomical criteria for Makkah.
Why do some sites show a Hijri date one day off?
Some sites use the tabular calendar or a local sighting instead of Umm al-Qura, which is why the tabular date is shown here for comparison.
Does the Hijri day start at sunset?
Religiously the Hijri day starts at sunset, but the official calendar pairs each full Gregorian day with one Hijri date, and that is what this tool shows.
How do I convert a Gregorian date to Hijri?
Pick the Gregorian date in the tool and the matching Umm al-Qura Hijri date appears straight away. Example: Wednesday 18 February 2026 is 1 Ramadan 1447 AH. The conversion runs in your browser and sends nothing.