🎂 Age Difference Calculator
How much older is one sibling, partner or classmate than another — exactly? Enter two dates of birth and get the precise gap in years, months and days, plus the total number of days between the two births.
How to use the Age Difference Calculator
- Select the first person's date of birth.
- Select the second person's date of birth (order does not matter).
- Press Calculate — the difference and the older person appear below.
Example: Born 10 May 1990 and 20 August 1995: the difference is 5 years, 3 months and 10 days — 1,928 days in total — and the first person is the older one.
Frequently Asked Questions
Does the order of the dates matter?
No — the calculator sorts them itself and tells you which person is older.
Are leap years counted?
Yes — the gap is computed on the real calendar, so every 29 February between the two dates is included.
What if both were born on the same day?
The calculator reports a difference of 0 days and notes that the two are exactly the same age.
Related Calculators
