Step-by-step
- Enter the start date and the end date.
- Read the number of business days shown.
- Subtract any public holidays or company closures that fall on a weekday inside the range.
- If you need to exclude the start date, subtract one when it falls on a weekday.
- For a deadline, count forward from the day after the start and double check it against your contract or policy.
A worked example
From Monday 2 November 2026 to Friday 20 November 2026 there are three full weeks, so 15 business days when both dates are included. If one of those weekdays is a public holiday, subtract one to get 14.
Inclusive and exclusive counting
This tool counts both the start and end dates. Some contracts and delivery estimates count from the next day, which gives one day fewer. Check which rule applies before you quote a number.
Holidays and regional weeks
Public holidays differ by country and region, and some places have a different working week. The calculator assumes Monday to Friday and does not know your local holidays.
Finish the task with DevUtilityKits
Use the relevant online utility, check the result, and continue with your development workflow.
Open Business Days Calculator →Open Date Calculator →