Age difference calculator
Calculate the age difference between two people
Enter two dates of birth to see the age gap in years, months and days. Find out who is older and by how much.
Age difference calculator
Person 1
36y 5m 13d
Person 2
30y 11m 30d
Age difference
6 years, 6 months, 17 days
1,991 total days apart
Person 1 (born Monday, January 1, 1990) is older.
Frequently asked questions
- How do I calculate the age difference between two people?
- Enter both dates of birth and a reference date (default is today). The calculator shows each person’s age, the difference in years, months and days, and who is older.
- What if both people were born on the same date?
- The calculator shows a zero difference and displays “Both were born on the same date.”
- Can I use a past date as the reference?
- Yes. Change the “As of” field to any date to see the age difference at that time. Both birth dates must be before the reference date.
- How is the age difference calculated?
- The difference is computed as the absolute gap between the two ages in years, months and days, plus the total number of days apart.