Date Difference Calculator
Count calendar days or Monday–Friday weekdays between two dates. Choose whether to include both dates and see whole weeks and leftover days.
Count calendar days or Monday–Friday weekdays between two dates. Choose whether to include both dates and see whole weeks and leftover days.
Count calendar days or Monday–Friday weekdays between two dates. Choose whether to include both dates and see whole weeks and leftover days.
Date difference = (end date at UTC midnight − start date at UTC midnight) ÷ 86,400,000 ms. Business days count Monday–Friday only.
From November 1 to November 30, 2026 there are 29 elapsed calendar days; counting both dates gives 30.
Weekday calculations exclude Saturdays and Sundays, not public holidays. Select a local holiday calendar separately when legal precision is necessary.
Yes. Use Copy to copy the result or full example. Share creates a link that puts your chosen values into the URL fragment so another person can reproduce the calculation. Your named saves and recent history stay in your own browser.
By default the end date is not counted, so 1 to 2 November is 1 day. Switch on “include end date” to count both days (2 days).
Weekday mode counts Monday to Friday only. Public holidays and local working calendars are not excluded, so subtract holidays yourself if needed.
Yes. The result is then negative, which tells you the end date is earlier than the start date.