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What this calculator does
Count working days between dates while excluding weekends.
How to use this calculator
- Enter start and end dates and select the workweek rules.
- Review the calculation assumptions before using the result.
- Use the answer for delivery and project schedules.
How to calculate
Choose the calculation mode where available, then enter the values requested by the business days calculator. Results update immediately.
Worked example
With the example values shown above, the business days is 21, and the calendar days counted is 31, and the excluded days is 10.
Understanding your result
Use the answer for delivery and project schedules.
- Public holidays need separate consideration.
- Double-check values and units before calculating.
Frequently asked questions
What does this business days calculator do?
Count working days between dates while excluding weekends.
How do I use this business days calculator?
Enter start and end dates and select the workweek rules.
What does the result mean?
Use the answer for delivery and project schedules.
What should I check before relying on it?
Public holidays need separate consideration.
What's the difference between this and the work-days calculator?
They use the same underlying calculation — counting days in a range while excluding weekends and any listed holidays. Business days and work days are treated as equivalent here.
Why didn't adding a holiday change my total?
If the holiday date falls on a day already excluded as a weekend, or outside the date range you entered, it doesn't reduce the count further — the notice below the result explains why each entered holiday didn't change the total.