Age Calculator

How to calculate your exact age

1. Enter your date of birth (or anyone else’s).
2. The “Age on” date is today by default — change it to find someone’s age on a past or future date.
3. See the exact age in years, months and days, totals in months, weeks and days, and a countdown to the next birthday.

This free age calculator counts full calendar years and months first, then the remaining days, which is how age is normally stated on forms and documents. Leap years and months of different lengths are handled correctly, and people born on 29 February get their birthday on 28 February in non-leap years. Hours and minutes are approximate because the exact time of birth is not known. Your date of birth is only remembered in this browser.