Delivery times, notice periods and payment terms are often counted in working days. Counting on a calendar is slow and easy to get wrong.
Try it now: Business Days Calculator
Free, no sign up, and the file stays on your device.
Open Business Days CalculatorHow to count
- Open Business Days Calculator.
- Choose the start and end date. Both days are counted.
- Choose your weekend: Saturday and Sunday, Friday and Saturday, or Sunday only.
- Add holidays as dates like 2026-12-25, one per line.
- Read the number of working days.
Find a date after some working days
Use the second box to add working days to the start date, for example 10 working days for a delivery. Use a minus number to go back.
Holidays
Public holidays differ by country and state, so you type your own. Holidays that fall on a weekend are not counted twice.
Frequently asked questions
Is anything uploaded?
No. Everything is calculated in your browser, so what you type stays on your device.
Ready to start?
Open Business Days Calculator