AtlasCalc📅 TimebeginnerOffline
Business Days
Number of business days (Mon–Fri) between two dates, excluding an optional holiday list.
Inputs
Enter your values below.
Result
Your answer appears here.
Enter values and press Calculate — the result appears here.
How it works
The formula behind this calculator.
business days = total days − (weekends + holidays)
- start, end
- Two dates
- holidays
- Optional list of public holidays to exclude
A business day is a weekday (Mon–Fri) that's not a public holiday. The calculator counts only business days in the range.
Example: Mon–Fri = 5 business days; Mon to next Mon = 6
Ref: ISO 8601 weekday numbers
Tips
- 💡 Most public holidays are not subtracted. Add them manually if your region's holidays matter.
- 💡 A 5-business-day turnaround is common for many services; the calculator helps you see the calendar end date.