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Use this business days calculator for a clear date & time estimate. Results update instantly in your browser.
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
Count dates in the interval after excluding the selected weekend days and listed holidays.
Choose the calculation mode where available, then enter the values requested by the business days calculator. Results update immediately.
Worked example
The defaults provide a complete worked example. Change any value to recalculate the result and any schedule shown.
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.