Date Difference Calculator
Count the days, weeks, and weekdays between two dates.
Your answer
Turn on JavaScript to use this calculator. The formula is explained below so you can work it out by hand.
How this calculator works
The calculator subtracts the start date from the end date. By default it counts the start date but not the end date, the way you'd count nights of a hotel stay. Check the box to include both dates, the way you'd count days of an event.
The weekday count includes Monday through Friday and does not skip public holidays.
Example
From October 3, 2026 to December 25, 2026 is 83 days, which is 11 weeks and 6 days.
Category: Everyday Math, Work & Career