How to use the Age Calculator
- Enter the date of birth.
- The "Age on this date" box is set to today — change it to calculate age on any other date.
- See the exact age in years, months and days, plus total months, weeks and days.
- Check the countdown to the next birthday.
Frequently asked questions
How is age calculated?
We count full years first, then the full months remaining, then the leftover days — the same way age is counted on official documents.
Can I calculate age on a past or future date?
Yes. Change the "Age on this date" field to any date, for example to check your age on an exam or application deadline.
What if I was born on 29 February?
In years without 29 February, the birthday is counted on 1 March.
Is my date of birth stored?
No. The calculation happens in your browser and nothing is saved or sent anywhere.