How are months counted?

By calendar, not by an average length. From 31 January to 1 March is one month and one day, because the month is counted first and the remaining days after it — which is how people actually mean it.

Are leap years handled?

Yes. The day count follows the real calendar, including 29 February.

Age Calculator

Exact age in years, months and days, plus the gap between any two dates.

Runs in your browser — nothing uploadednew

How to age calculator

Enter a date of birth.
Optionally enter a second date to measure to, instead of today.
Read the exact age in years, months and days.

Questions

How are months counted?: By calendar, not by an average length. From 31 January to 1 March is one month and one day, because the month is counted first and the remaining days after it — which is how people actually mean it.
Are leap years handled?: Yes. The day count follows the real calendar, including 29 February.

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