About Age Calculator Online

A clear calendar calculation

Age Calculator Online finds the time between a date of birth and a date you choose. It shows complete calendar years, months, and days, along with total days lived and the next birthday.

Month lengths vary, so the calculation follows the calendar instead of treating every month as 30 days or every year as 365 days.

February 29 birthdays

For a non-leap year, you can choose February 28 or March 1 as the birthday boundary. This is a general date calculation; a law, school, employer, or other institution may apply a different rule.

Privacy

The calculator processes the dates in your browser. Read the Privacy Policy for details about analytics and the information this site does and does not collect.