Business Days Calculator
Count working days between two dates, or add business days to a date.
100% private — everything runs in your browser
How to Use
- 1
Pick whether you want to count days or add days.
- 2
Enter the dates, and list any holidays you want to skip.
- 3
Read the result — weekends are always excluded.
Examples
Delivery window
Input
Count from 2026-10-01 to 2026-10-31Output
22 business days with no holidays configured.Add a review period
Input
Start 2026-10-01 · add 5 business daysOutput
The fifth business day after the start date.FAQ
Are weekends always excluded?
Yes. Saturday and Sunday are skipped, and you can add regional holidays on top.
Does the end date count?
Only if “Include the end date” is on and the date is a weekday.
How are holidays entered?
One ISO date per line, for example 2026-12-25. Invalid lines are ignored.
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