Age Calculator
Exact age in years, months, days — plus days lived until a date.
How to use the Age tool
- Enter your age in the fields above.
- Adjust any slider or type an exact number — the answer updates as you go.
- Copy the result and close the tab. Nothing you entered was sent anywhere.
About the Age tool
Enter a birth date (and optionally a second date) to get an exact age in years, months and days, plus total days, weeks and months lived.
The calculation follows calendar rules — it counts actual month lengths, so “4 years, 2 months, 13 days” is exact rather than approximated.
Everything runs locally in your browser: no data is uploaded, no account is needed, and it works offline once the page has loaded.
Embed this tool
Customize and copy an iframe. Linking back helps both sites.