Age Difference Calculator
Calculate the exact age difference between two people in years, months and days.
Results
Want to know the exact age gap between two people? Enter both birth dates and get the difference in years, months and days. This tool is commonly used by couples, siblings, parents calculating spacing between children, genealogy researchers and anyone curious about exact age gaps.
Explore all our age calculator tools, or browse the full time and date converters & calculators.
Frequently asked questions
Enter both birth dates above. The calculator subtracts the older date from the younger to show the exact gap in years, months and days, plus total days apart.
Studies show the average age gap between heterosexual couples is 2-3 years, with the male partner typically older. About 8% of couples have a gap of 10+ years. Our calculator shows the exact difference for any two dates.
Enter each sibling's birth date. Pediatricians note that a 2-3 year gap is most common. Gaps under 18 months are considered close spacing, while 4+ years is wider spacing.
Yes. Enter any valid dates to calculate the age difference between historical figures, celebrities or anyone else. The calculator works for any year, including dates centuries apart.
No. The calculator automatically determines who is older and shows the difference as a positive value regardless of which person you enter first.