Age Calculator — Exact Age in Years, Months & Days

Compute exact age from a birth date, see next birthday countdown and total days lived. Private — calculations run in your browser.

Try it now — enter a birthdate and click Calculate.

Tip: leave "Compare to" blank to use today's date. All calculations run locally — no data leaves your browser.

Private — client-side only. Use for convenience.

Frequently asked

How is the age calculated?

We compute years, months and remaining days between dates using calendar-aware arithmetic (handles leap years).

Is my birthdate stored?

No. All calculations run client-side in your browser. Nothing is uploaded.