How to use the Days Between Dates Calculator
- Choose the two dates.
- Tick “include end date” if both the first and last day should count.
- Press Calculate.
Formula
Days = end − start (+ 1 if the end date is included). Weekdays are counted day by day from the start date.
Examples
- 1 to 10 March: 9 days, or 10 days with the end date included.
Frequently asked questions
Should I include the end date?
Include it when counting days of an event or stay (e.g. leave from Monday to Friday is 5 days). Leave it out when measuring elapsed time.