Age Difference Calculator
Two birthdays in, one honest gap out — in years, months and days.
The age difference is
0y 0m 0d
How it works
We order the two dates, then take the calendar difference (years → months → days) with leap years handled. Everything runs in your browser — no uploads.
Common uses
Sibling age gaps, couple age differences, parent–child gaps, and age requirements (school entry, sports categories). For a single person's exact age, use the age calculator; to project an age on a future date, try the future age calculator.