Age & Date Difference Calculator
Calculate exact age or the difference between two dates in years, months and days.
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About this tool
Calculating an exact age — or the span between two dates — is surprisingly tricky. A year is not always 365 days; months have different lengths; leap years add a day in February.
This calculator handles the edge cases correctly using calendar arithmetic rather than simple division. It also provides total days, hours and minutes for the date difference mode.
How to use it
- Age mode: enter a date of birth. The exact age in years, months and days is computed against today's date.
- Date Difference mode: enter two dates to find the calendar difference and the total number of days, hours and minutes between them.