How does Date Difference calculation work?

Select a start date and end date to calculate the exact number of days, weeks, months, and years between them.

Can I include or exclude the end date?

You can toggle whether to include the final target date in the total count.

Yes, it calculates total calendar days as well as working business days (Monday to Friday).

Yes, all leap year calendar adjustments are handled natively by JavaScript Date objects.

100% Client-Side: Your data never leaves your browser. Zero server processing or data storage.

Calculate the exact time between two dates — years, months, weeks, days, hours, and business days.

Start Date

End Date