Age Calculator
Age Calculator: Calculate age in years, months and days between two dates.
Age Calculator
Age Calculator: Choose a date of birth and an end date. The calendar-age calculation counts completed years and months, followed by remaining days.
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How to use Age Calculator
Choose a date of birth and an end date. The calendar-age calculation counts completed years and months, followed by remaining days.
How Age Calculator calculates the result
Compare the birth date with the selected end date. Count full calendar years, then complete calendar months, then the remaining days. This is calendar age, not the number of days divided by 365.
Example
A person born on January 1, 2000 is 26 years, 0 months and 0 days old on January 1, 2026.
What to know
Dates near the end of a month use the last valid day in shorter months. For legal age requirements, check the relevant jurisdiction's rules.