Hijri to Gregorian converter: convert dates both ways
Convert a date between the Hijri and Gregorian calendars. Hijri dates follow the Umm al-Qura calendar, which Saudi Arabia uses for official dates.
Hijri–Gregorian date converter
Result
Choose a date to convert.
The Umm al-Qura calendar is calculated in advance. The start of a month for religious purposes, such as Ramadan and the two Eids, is set by moon sighting and can differ by a day, so follow the official announcement for those.
How the converter works
Choose a direction, then a date. The converter shows the same day in the other calendar, with the month name and the day of the week. It runs in your browser.
Hijri dates follow the Umm al-Qura calendar, which Saudi Arabia uses for official dates. A Hijri year has twelve months of 29 or 30 days, so it is about eleven days shorter than a Gregorian year, and Hijri dates move through the seasons.
The issue date in an invoice XML is a Gregorian date, written year-month-day. A Hijri date can be shown beside it on a printed invoice, and this converter gives you the matching one.
Good to know
- The Umm al-Qura calendar is calculated in advance, so a date converts the same way every time. Religious dates, such as the start of Ramadan and the Eids, are set by moon sighting and can differ by a day.
- Other tools may give a different Hijri date for the same day, because some use a simple formula instead of the Umm al-Qura tables.
- Gregorian dates from 1900 to 2076 are supported.
- Nothing you enter is stored or sent. The conversion runs in your browser.
Questions about Hijri dates
How do I convert a Hijri date to a Gregorian date?
Choose “Hijri to Gregorian”, enter the day, month and year, and read the Gregorian date below. The tool uses the Umm al-Qura calendar.
What is the Umm al-Qura calendar?
It is the Hijri calendar that Saudi Arabia uses for official dates. Its months are calculated in advance, so every date converts the same way.
Can I rely on this for the dates of Ramadan and Eid?
Use it for calendar dates. The start of Ramadan and the Eids is decided by moon sighting and announced each year, and it can differ by a day. Follow the official announcement.
Which date goes on a Saudi invoice?
The issue date in an e-invoice XML is a Gregorian date. A Hijri date may also be shown on the printed invoice. Ask your accountant or check ZATCA’s requirements for your case.
Why do other tools show a Hijri date one day different?
Hijri calendars differ. Some tools use a simple civil formula, and others use the Umm al-Qura tables. This tool uses the Umm al-Qura tables.
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