Age Calculator
Find your exact age and the countdown to your next birthday.
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your age
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| In weeks | – |
| In days | – |
| In hours | – |
| Next birthday | – |
Age calculator
This age calculator works out your exact age in years, months, and days from your date of birth. It also shows your age in total months, weeks, days, and hours, and counts down to your next birthday. You can calculate your age as of today or as of any other date — handy for working out how old someone will be on a future occasion.
How age is calculated
The calculator counts complete years, then the remaining whole months, then the leftover days, correctly accounting for months of different lengths and leap years. This is the standard way age is expressed and matches how official documents calculate it.
Other uses
Beyond birthdays, you can use it to find the age of any event, document, or milestone. To measure the gap between two arbitrary dates, use our date calculator, and to convert larger time spans, the calendar time converter.
Frequently asked questions
Does it account for leap years?
Yes. The calculation uses actual calendar dates, so leap years and varying month lengths are handled automatically.