Date Difference Calculator

Find the exact days, weeks, months, and years between two calendar dates.

Start Date

End Date

How to Calculate Difference Between Two Dates

Select the Start Date using the calendar picker.
Select the End Date.
Click Calculate Difference (or watch it compute in real time).
View the breakdown in years, months, and days, as well as total days, weeks, and hours.

Does this calculator account for leap years?

Yes! Our calculator accounts for February leap year days (29 days) and accurate variable month lengths (28, 30, and 31 days).

What if the start date is after the end date?

The calculator automatically calculates the absolute duration between the two dates regardless of the entry order.