Tools / Age calculator
Age calculator: how old am I exactly?
Enter a date of birth to see the exact age in years, months and days, how many days you have lived and when the next birthday is.
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–Days lived
–Weeks lived
–Hours lived (approx.)
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🔒 Runs entirely in your browser – nothing you enter is uploaded or stored.
How to use it
- Enter the date of birth.
- Optionally change the reference date (default: today).
- Read exact age, totals and the next birthday.
Your inputs live only in the link, not on our server.
Last checked: October 2026. Found a mistake? Use the form below – we fix confirmed errors and update the date.
Frequently asked questions
How is the exact age calculated?
Full years are counted first, then full months, then remaining days – the way ages are usually stated.
What about people born on 29 February?
In non-leap years we treat 28 February as the birthday for the countdown; legal rules may differ by country.