Age Calculator
Calculate age in years, months, and days from a birth date.
Inputs
Output
Enter a birth date to see the age.
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About Age Calculator
The Age Calculator works out an exact age in years, months and days from a date of birth. It defaults to today, but you can pick any other date to find out how old someone was, or will be, at a particular moment.
How to use it
- Enter the date of birth.
- Leave the As Of Date set to today, or change it to another date.
- Read the age in years, months and days, plus the total number of days lived.
Good to know
- Changing the As Of Date is useful for eligibility checks, such as confirming an age on the day an application closes.
- Birthdays on 29 February are handled using real calendar dates, so the age still increases in non-leap years.
- The date of birth must come before the As Of Date.
Common questions
How old will I be on a future date?
Set the As Of Date to the future date you are interested in.
Is my birth date stored?
No. The calculation happens in your browser and nothing is saved or sent anywhere.