Who Is Older? Compare Birth Dates

Settling “who is older” by date of birth is easy when you can measure the exact gap between two birth dates — down to the day.

How to compare two ages

Enter both dates of birth into a date-of-birth or date-difference calculator. The one with the earlier date of birth is older, and the tool tells you precisely how much older — in years, months and days.

Why the exact gap matters

Saying “about the same age” is fine for small talk, but sometimes you want the real figure: siblings arguing over minutes, couples comparing birthdays, or twins separated by a few minutes. An exact age gap removes all doubt.

Age difference in different units

Beyond years, you can see the gap as a total number of days or weeks — a fun way to frame how close (or far apart) two people really are in age.

Works for any two people

The comparison isn’t limited to you. Compare any two birth dates — friends, historical figures, or family members across generations.

Compare two birth dates

Use the Date Difference tool to measure the exact age gap between two people.