Age Difference Calculator

Find exact ages and the precise difference between two dates of birth.

First Date of Birth

Second Date of Birth

Age Difference

Select two dates

The exact difference will appear here.

—Years

—Months

—Days

What this calculator shows

Enter two dates of birth to calculate the difference between them in complete years, months and days.

It also shows the total difference in days and approximate weeks, which can be useful for comparing birthdays, ages of family members, or other dates.