Age Calculator
Calculate the exact age — in years, months, days, and total days — between a birth date and any other date.
Age
36y 7m 21d
- Total days
- 13,382
Assumptions
- Calendar-aware — correctly handles varying month lengths and leap years
How it's calculated
Years, months and days are computed by calendar subtraction with month/day borrowing; total days is the raw day difference.
Worked example
Someone born May 15, 1990 is 36 years, 3 months and 6 days old as of August 21, 2026.