Age Calculator
Enter a date of birth to get an exact calendar age rather than a rounded number of years.
Notes
- Someone born on February 29 has their age advance on March 1 in non-leap years.
- The next-birthday countdown skips to the following year once the current year's birthday has passed.
Common questions
- Why do the months and days not divide evenly?
- Months vary between 28 and 31 days, so a calendar age can only be expressed as whole years, whole months and leftover days. The total-days figure is the exact measure.
- Can I calculate age at a past date?
- Yes. Set the second field to the date you care about, such as a school enrollment cut-off or the date of an event.