How to use the Age Calculator tool
3 simple steps · under a minute
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Enter the date of birth
Pick the day, month and year of birth.
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Choose the “age on” date
Leave it as today, or pick another date to find the age on that day.
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Read the result
See the age in years, months and days, plus totals and the next birthday.
About Age calculator
This age calculator works out the exact time between a date of birth and today, or any other date, in years, months and days. It is useful for application forms that ask for your age on a certain date, for checking eligibility age limits, or simply for curiosity.
The calculation counts complete years first, then complete months, then the remaining days, the same way age is counted on official documents.
Exact to the day
Handles leap years and months of different lengths correctly.
Age on any date
Find out how old someone was, or will be, on a specific date such as an exam deadline.
Fun facts
Total months, weeks, days and hours lived, the weekday you were born and days to your next birthday.
Frequently asked questions
How is age calculated?
We count the complete years since the date of birth, then the complete months since the last birthday, then the remaining days.
How do I calculate my age on a specific date?
Change the “Age on” date to the date you need, for example the last date of an application, and the result updates instantly.
What about people born on 29 February?
In non-leap years, their birthday is treated as 28 February for the next-birthday countdown, and the age is still counted correctly.
Is my date of birth stored?
No. The calculation happens in your browser and nothing is saved or sent.