Compare two birthdates to see who's older, and by exactly how much.
The calculator finds the exact number of years, months, and days between the two birthdates, the same way it would calculate a single person's age — just measured between two dates instead of from one date to today.
No. Enter the two dates in either order — the calculator automatically figures out who's older and shows the difference the same way either way.
Yes, it works for comparing any two people's birthdates, whether that's siblings, friends, a couple, or any two dates you're curious about.
No. Both dates are compared entirely in your browser and are never sent to or saved on any server.