About the Business Days Calculator
Contracts, notice periods and delivery windows are usually counted in working days rather than calendar days. This calculator counts the days between two dates that fall on your working pattern, and lets you subtract public holidays.
Also known as: working days calculator, weekdays between dates, business day counter, excluding weekends.
How to use this calculator
- Enter from, to, weekend, public holidays in the period.
- The result updates instantly as you type — press Calculate (or Enter) at any time.
- Review the breakdown shown under the main result.
- Use Copy result or Share to save the answer or send a link with your inputs.
Formula
working days = calendar days − weekend days − holidays
Worked example
Using the values pre-filled in the calculator above:
- From: 2026-09-22
- To: 2026-11-21
- Weekend: Saturday and Sunday
- Public holidays in the period = 2
the calculator returns:
- Working days: 42
- Calendar days: 61
- Weekend days: 17
- Holidays deducted: 2