Hijri age calculator

Enter your Gregorian date of birth to see your age in Hijri years and months, your birth date in the Hijri calendar, and the difference between your age in the two calendars.

Why your Hijri age is higher

The Hijri year is about eleven days shorter than the Gregorian year, so 33 Gregorian years are roughly 34 Hijri years. Someone aged 30 in the Gregorian calendar has completed about 31 Hijri years, and someone who is 60 is close to 62 in Hijri years.

When you need your Hijri age

Some older documents in Saudi Arabia, such as birth records and family cards issued decades ago, carry Hijri dates. Rulings in Islamic law that depend on age or elapsed time, such as the zakat year and the age of accountability, are also counted in lunar years.

How the tool calculates

We convert your date of birth and today's date to Hijri with the Umm al-Qura calendar through UmmahAPI, then subtract one from the other: years, then months, then days. When a month is borrowed we count it as 30 days, so the days figure can differ by one from a manual calculation that uses the month's actual length.

Only the date itself is sent to our server to run the conversion, and it is passed on to UmmahAPI as a bare date, with no name, account or anything else that identifies you.

Frequently asked questions

How do I calculate my age in Hijri?
Enter your Gregorian date of birth in the calculator above and press Calculate. Your age appears in Hijri years, months and days, along with your Hijri birth date.
What is the difference between Hijri and Gregorian age?
Hijri age gains about one year for every 33 Gregorian years. The gap is about one year at age 30 and two years at age 65.
I only know my birth date in Hijri. What should I do?
Convert it to Gregorian first on the "Hijri date today" page of this site, then enter the result here.

Where the dates come from Hijri dates are calculated with the Umm al-Qura calendar through UmmahAPI and cross-checked against the Umm al-Qura tables in the ICU library. Islamic months officially begin with the sighting of the crescent, so the observed date can differ by one day from country to country. How we calculate dates