Age Calculator
Your exact age in years, months, and days — plus your Hijri age and next birthday
| Day of week born | Thursday |
| Next birthday | In 266 days |
| Hijri date of birth | 16 Muharram 1416 AH |
For your exact age in Hijri (lunar) years — a different, larger number than your Gregorian age — see the Islamic Age Calculator.
Frequently Asked Questions
Calculating exact age sounds trivial until leap years, varying month lengths, and the gap between someone's Gregorian and Hijri age all enter the picture — a precise age-in-years-months-days figure needs to account for all three, not just subtract birth year from current year.
Why "years since birth" isn't the whole calculation
A naive age calculation (current year minus birth year) can be off by one whenever the current date hasn't yet reached the birthday in the current year — someone born in November isn't a year older until November arrives, regardless of what the plain year subtraction suggests. Getting the months and days components right additionally requires correctly handling variable month lengths (28–31 days) and leap years (which add a day to February periodically), since a naive day-count approach that ignores these produces a slightly wrong months/days breakdown. This calculator also reports Hijri age alongside Gregorian age, since the two run on different calendar systems (lunar vs. solar) and diverge more the older someone is — a person's Hijri age is typically higher than their Gregorian age, by an amount that grows over a lifetime.
A worked example
Someone whose birthday hasn't yet occurred this calendar year is one year younger, in exact terms, than someone born the same calendar year but earlier in the year — a naive year-subtraction calculation would show them as the same age, when in exact years-months-days terms they aren't, until the first person's birthday actually arrives.
How this connects to your other date calculations
For a birth date converted specifically into Hijri calendar terms rather than just an age figure, the Islamic Age Calculator and Hijri Date Converter handle that conversion directly. For measuring the gap between any two dates that aren't a birth date and today, the Date Difference Calculator generalizes this same exact-date-math logic.
Common mistakes
The most common mistake is estimating age by subtracting birth year from current year without checking whether the birthday has occurred yet this year — this off-by-one error is easy to make mentally and shows up constantly in casual age estimates, which is exactly the kind of small but real error an exact date-based calculation avoids.