Age Difference Calculator
Find the exact age gap between two people from their birth dates — in years, months and days, plus the total number of days. The order of the dates doesn't matter.
How to use
Enter both birth dates and calculate. The tool shows the difference broken down into years, months and days, and the total days between them.
It handles month lengths and leap years correctly, so the breakdown is exact rather than an approximation.
FAQ
Does the order of dates matter?
No — the tool always shows the positive difference, whichever date you enter first.
Are leap years counted?
Yes — the calculation uses real calendar dates, so leap years and different month lengths are handled correctly.
What's the total days for?
It's the exact number of days between the two dates, useful for anniversaries or precise comparisons.
Is my data private?
Completely — the dates never leave your browser.