Date Duration Calculator

Calculate days between two dates, count Monday–Friday weekdays, include the end date, and add or subtract calendar days. Free and private in your browser.

Free · No signup · Browser-first

Date duration calculator

Calendar system

Start date

End date

Include end date

Add or subtract days

Days (+/−)

Count calendar days and weekdays between dates

Choose a starting and ending date to calculate the number of days between them. Optionally include the ending day to count both boundaries. Weekdays count Monday through Friday only: public holidays, regional weekends and working schedules are not included. Add or subtract signed calendar days from the starting date without needing an account.

Frequently asked questions

Does the weekday count include public holidays?

No. It excludes Saturday and Sunday only, so it does not calculate country-specific holidays or work schedules.