Age Difference Calculator
Calculate the exact age difference between two people or two dates. See the difference in years, months, and days.
Part of our Date & Time Calculators collection.
Age Difference Calculator
Free online calculator
Results update automatically as you type
How to Use This Calculator
- 1
Enter the first date of birth.
- 2
Enter the second date of birth.
- 3
See the exact age difference in years, months, and days.
How Age Difference is Calculated
Age Difference = |Date1 − Date2| The absolute difference between two dates, expressed in years, months, and days.
Example Calculation
Example: Born 1985-06-15 vs 1990-03-20
Inputs
dob1: 1985-06-15dob2: 1990-03-20
Result
4 years, 9 months, 5 days apart
The age difference between June 15, 1985 and March 20, 1990 is 4 years, 9 months, and 5 days.
Frequently Asked Questions
What is a healthy age gap in a relationship?
This calculator shows the mathematical difference — relationship compatibility depends on many factors beyond age. The calculator is neutral on what gap is 'healthy'.