Your Age in the Islamic Calendar
Enter your date of birth and discover your Hijri age, your Islamic birth date, and when your next Hijri birthday falls.
Why your Hijri age is higher than your Gregorian age
The Islamic Hijri calendar follows the moon, and the lunar year is about 11 days shorter than the Gregorian solar year. That means every Hijri year passes faster than a Gregorian year. Over a lifetime, Hijri years accumulate quicker. By the time you are 33 Gregorian years old, you have already lived through 34 Hijri years. The longer you live, the more those extra years add up.
This matters practically in Islamic jurisprudence, where age is sometimes calculated by the lunar calendar. Knowing your Hijri age is the correct starting point for those questions.
What is a Hijri birthday?
Your Hijri birthday falls on the same day and month of the Islamic calendar as your birth, but because the Hijri year is shorter, that date slides about 11 days earlier through the Gregorian calendar every year. Someone born on 1 Ramadan (you can check the days until Ramadan or view the Ramadan Calendar 2027) will celebrate their Hijri birthday in winter one decade and in summer the next, cycling through all seasons over roughly 33 years.
The calculator above shows your next Hijri birthday as a Gregorian date, so you know exactly when it’s coming and many days remain. You can also track it with our Islamic date converter.
How this calculator works
Your date of birth is converted to the Hijri calendar using the standard astronomical algorithm, calibrated to the sighting-based dates followed across the Indian subcontinent. Your Hijri age is then calculated as the difference between your Hijri birth date and today’s Hijri date, in years, months, and days. (If you want to plan ahead, you can also see the Islamic date tomorrow.) Your next Hijri birthday is found by identifying the same Hijri day and month in the coming Hijri year, then converting that back to a Gregorian date.
The calculation uses the same offset and method as the rest of this site. For historical dates (before 1900) the accuracy decreases slightly, but for anyone born in the 20th or 21st century the result is reliable to within a day.
How many days have you lived in Hijri terms?
The calculator also shows your total days lived since birth. This is the same number whether you count in Gregorian or Hijri days, because a day is still a day, only the grouping into years and 12 Islamic months differs. But seeing it as a large number makes it vivid: over 13,000 days if you’re in your mid-thirties. Some people find this a meaningful reminder of the time passed and the intention with which to use what remains.
If you are tracking key dates, you can browse all Islamic events countdowns like the days until 10th Muharram (Ashura), the Mawlid al-Nabi countdown, the Shab-e-Barat countdown, the Shab-e-Meraj countdown, or the Shab-e-Qadr countdown.