Age Calculator

Calculate exact age in years, months and days from a date of birth, plus the total number of days lived and the next birthday countdown.

Date of birth

As of date

How to use the Age Calculator

Enter your date of birth.

Optionally change the 'as of' date — it defaults to today.

The calculator shows your exact age in years, months and days, total days lived, and a countdown to your next birthday.

Does the calculator account for leap years?+

Yes. Age is calculated from real calendar dates, so leap years are automatically handled correctly.

Can I calculate age as of a future or past date?+

Yes, change the 'as of' date to any date you like — useful for calculating age at a specific event, such as a wedding or graduation.