Age Calculator

Frequently asked questions

How is the exact age in years, months and days calculated?

The calculator counts complete years, then complete months in the remainder, then the leftover days, from the date of birth to the "as of" date — accounting for different month lengths and leap years, not just a simple day-count division.

Can I calculate age as of a date other than today?

Yes — set the "as of" date to any date you like, for example to work out how old someone was on a specific past date or will be on a future one.

Does it account for leap years correctly?

Yes. Because the calculation walks calendar months and years rather than dividing total days by 365.25, February 29th and varying month lengths are handled correctly.

Is my date of birth stored or sent anywhere?

No. The calculation runs entirely in your browser — the date you enter is never uploaded, stored, or sent to a server. No account is required.

Do I need to install anything or sign up?

No. It runs entirely in your browser — no software install, no account, no email required.