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Age Calculator — Exact Age from Date of Birth
Enter a date of birth to get an exact age in years, correctly accounting for whether the birthday has already occurred this year, along with a countdown to the next birthday.
How it works
Date of birth
Age
Days until next birthday
Frequently asked questions
Why is the age lower than I expected?
The calculator subtracts one year if your birthday has not yet occurred this year. Age is counted in completed years, so someone born on 1 January is still counted a year younger on 31 December of a year they turn that age.
How accurate is the days countdown?
It measures whole days from the current moment to midnight at the start of your next birthday, so it changes as the clock rolls over. Rebuild or reload the page to refresh it.