Age Difference Calculator
Compare two birth dates to see the exact calendar difference in years, months, and days.
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Your result
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Worked example
Sample inputs
- First date of birth
- 1990-04-15
- Second date of birth
- 1994-09-02
Age difference: 4 years, 4 months, 18 days
- Earlier date: 15 April 1990
- Later date: 2 September 1994
How this age difference calculator works
The earlier date is compared with the later date using calendar arithmetic. The answer is always a non-negative duration, regardless of which date is entered first.
Frequently asked questions
Does the order of the dates matter?
No. The calculator sorts the dates before finding the difference.
Is the answer rounded to whole years?
No. It includes the remaining calendar months and days after the whole years.