Find out how many days there are between two dates — for a countdown, a project deadline, a notice period or a trip. You also get the number of full weeks and of weekdays (Monday to Friday).
How to use the days between dates calculator
- Pick the start and end dates.
- Choose whether the end date itself should be counted.
- Read the total days, weeks and weekdays.
Inclusive vs exclusive counting
From Monday to Friday of the same week is 4 days apart, but 5 days if you count both Monday and Friday — as you would for a 5-day event. Choose “Yes” to include the end date.
Frequently asked questions
How do I count business days between two dates?
Count the weekdays (Monday to Friday) in the range, then subtract any public holidays that fall on weekdays. The calculator does the first part for you.
Are leap years taken into account?
Yes. The calculation uses the real calendar, so 29 February is counted in leap years.
Last updated · Calculations checked by automated tests· Editorial policy