Years apart
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Age Difference Calculator
Calculate age difference & relationship age gap
Compare two birthdays or any two dates.
How the age gap calculator works
Input
First date
Birthday or date
Second date
Birthday or date
Calculate gap
Show difference
Results
Age gap
Yrs · months · days
Total days
Exact day count
Total weeks
Complete weeks
Total months
Complete months
Example age difference calculation
First date
Mar 11, 1971
Second date
May 31, 1971
Result
2 months, 20 days apart
Common age difference questions
How do you calculate the exact age difference between two people?
Enter both birthdates. The calculator measures the full years, months, and days between them to show the exact age gap.
Can this calculator show years, months, and days?
Yes. The main result shows the exact difference in years, months, and days.
Does it work for any two dates, not just birthdays?
Yes. You can compare birthdays, event dates, anniversaries, start and end dates, or any two valid calendar dates.
Can I calculate the days between two birthdays?
Yes. Enter both birthdays and the result will show the total days between them.