Business Days Calculator
Pick a start and end date to count the business days (weekdays) between them.
How to use this calculator
- 1Pick the start date.
- 2Pick the end date.
- 3Read the number of business days (Monday–Friday) between them, inclusive.
How the Business Days Calculator works
Business days are weekdays — Monday to Friday — and they matter whenever a contract sets a deadline or payment term in working days rather than calendar days. This calculator counts the weekdays between two dates, including both ends, and shows the calendar and weekend totals alongside.
It excludes weekends but not public holidays, because those vary by country and region, so subtract any bank holidays in your period by hand. Counting the right kind of day is what stops an invoice being chased a few days too early — or paid a few days too late.
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Create an invoice freeFrequently asked questions
What counts as a business day?
A weekday — Monday to Friday. This calculator counts both the start and end dates and excludes Saturdays and Sundays.
Does it exclude public holidays?
No — it excludes weekends only, because holidays vary by country and region. Subtract any public holidays in your period manually.
Why does this matter for invoicing?
Some contracts define payment terms in business days rather than calendar days, so counting weekdays gives you the correct due date.
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