Business Days Calculator
Count the working (business) days between two Australian dates, excluding weekends and any public holidays you list.
Your results
Calculation breakdown
- Weekdays
- Count of Mon–Fri dates between start and end, inclusive
- Business days
- Weekdays − public holidays entered
Worked example
A contract runs from 01/03/2026 to 20/03/2026 with 1 public holiday (Labour Day) in that window. The date range has 14 weekdays, so the business day count is 13.
Assumptions
- Both the start and end date are included if they fall on a weekday.
- Only Saturday and Sunday are treated as weekends; state-specific public holidays must be entered manually.
- This is a general date calculation and does not check a live public holiday calendar.
How this calculator works
This calculator counts the number of Monday-to-Friday business days between a start and end date, letting you exclude a list of public holidays. It's useful for working out contract deadlines, delivery windows or notice periods that run in business days rather than calendar days.
Frequently asked questions
Does this include the start and end date?
Yes, both the start and end date are included in the count if they fall on a weekday.
How do I exclude public holidays?
Enter the number of public holidays that fall within your date range in the holidays field; the calculator subtracts these from the weekday count.
What counts as a weekend?
Saturday and Sunday are treated as non-business days, consistent with the standard Australian working week.