Count the working days (Mon–Fri) between two dates.
Calculated locally in your browser.
How do you calculate business days between two dates?
Every day from the start to end date (inclusive) is counted, Saturdays and Sundays are excluded, then any holiday count is subtracted. Both start and end dates are included, matching most working-day calculations. For example, June 2026 has 30 calendar days and 22 weekdays; subtracting 2 holidays leaves 20 working days.
Understanding your result
Both the start and end dates are included in the count, matching how most working-day calculations are done.
Formula and method
Every day from start to end (inclusive) is counted; Saturdays and Sundays are excluded, then the holiday count is subtracted.
Worked example
June 2026 has 30 calendar days and 22 weekdays; subtracting 2 holidays leaves 20 working days.
How to use this tool
- Choose a start and end date.
- Optionally enter the number of public holidays.
- Read the working-day total.
Common mistakes to avoid
- Forgetting to add public holidays, which are not detected automatically.
About the Business Days Calculator
Count how many working days fall between two dates, excluding weekends and any holidays you specify.
Who should use this tool
Project managers, HR and anyone planning deadlines or leave.
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Frequently asked questions
Are both dates included?
Yes. The count is inclusive of the start and end dates.
Does it know public holidays?
No — holidays vary by country, so enter the number to subtract yourself.