How to use the Age calculator
- 1Enter the date of birth.
- 2Keep today’s date or pick another date.
- 3Read the age in years, months and days, and the totals.
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Frequently asked questions
How are leap-day birthdays handled?
If you were born on 29 February, the birthday in non-leap years is counted on 28 February.
Why can months and days look uneven?
Months have 28–31 days, so the remaining days are counted from the same day of the previous month — the way people and most official forms count age.
Is my data sent anywhere?
No. Everything is calculated in your browser on your own device — nothing you type or upload is sent to a server.