DATE TOOLS
Age Calculator
Work out exact age in years, months and days — and the countdown to the next birthday.
Enter a date of birth above.
How to use the Age Calculator
- Enter the date of birth.
- Leave “Age on” as today, or change it to find the age on any other date — for an exam or job eligibility cut-off, for example.
- See the exact age, total days, weeks and months lived, the day of the week of birth and the next birthday.
Frequently asked questions
How is age calculated?
Completed years are counted first, then completed months, then the remaining days — the same way age is stated on official forms.
What about birthdays on 29 February?
In years without a 29 February, the next birthday is shown on 28 February. Some countries legally use 1 March instead, so check if it matters for a legal deadline.
Is my date of birth stored?
No. The calculation runs entirely in your browser and nothing you type is sent to us.