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Utilities

Free Age Calculator

Find your exact age in years, months and days, plus fun stats and your next birthday countdown.

What this does: computes the exact age between a date of birth and any target date, broken down into years, months and days, plus total days lived, total hours, and a countdown to the next birthday. It runs entirely in your browser and is 100% free, no signup required.
Exact age Enter a date of birth above
-- Total days lived
-- Total weeks
-- Total months
-- Total hours
-- Days until next birthday
-- Day of week born

Frequently asked questions

Is this age calculator free and private?

Yes, it is completely free with no signup. Both dates you enter are processed locally in your browser using JavaScript's Date object; nothing is uploaded, logged, or stored on any server.

How is the age calculated? Why not just divide total days by 365?

This tool compares calendar years, months and days directly, borrowing from the previous month or year when needed, so the years/months/days breakdown is exact even across leap years and months of different lengths. Dividing total days by 365 would drift over time.

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

Yes. Use the 'Calculate age as of' field to pick any past or future date, useful for figuring out someone's age at a specific event, or their age on a given date next year. The 'Today' button resets it back to the current date.