Age Calculator

Enter a date of birth to see exact age, next birthday countdown and total days lived.

Date of birth

As of

How age is calculated

We count completed years, then leftover months and days using the real calendar, including leap years. Next birthday is the next anniversary of the date of birth (1 March in non-leap years if you were born on 29 February).

Frequently asked questions

How is age calculated?

We count completed years, then leftover months and days, using the real calendar (leap years included).

Can I pick a custom “as of” date?

Yes. Useful for age on an exam or visa date.

Is my date of birth stored?

No.

Does it handle leap-day birthdays?

Yes. People born on 29 February are treated as 1 March in non-leap years for the leftover-day count.

Time zones?

The calculator uses calendar dates only, not the time of day.

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