Calculyn

Date Difference Calculator

Count the days, weeks and months between two dates.

Results update as you type.

Days between

358days
Weeks
51.1
Months (approx.)
11.8
Weekdays (Mon–Fri)
256
Days between358

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How it works

We count calendar days from the start date up to (but not including) the end date. Weekdays exclude Saturdays and Sundays but not holidays.

Formula

Days = end date − start date

Example

From January 1 to December 25, 2026 is 358 days.

Assumptions & limitations

  • Results are rounded for display.

Frequently asked questions

Is the end date included?

No. Add 1 if you want to count both the start and end days.