How to use this calculator
- 1
Choose a date range and whether each endpoint should count.
- 2
Select your weekend pattern, or include all days.
- 3
Optionally enter holiday dates, one YYYY-MM-DD date per line. Review the breakdown.
The calculation, explained
Business days = included calendar days − weekend days − unique holidays that fall on a working day inside the included range.
Monday, January 5 to Friday, January 9, 2026; both dates included
5 business days, or 4 if January 7 is entered as a holidayFrequently asked questions
Are public holidays excluded automatically?+
No. Holiday calendars vary by country, region, and employer. Enter the dates you need to exclude explicitly. No national holiday calendar is selected by default.
What if a holiday falls on a weekend?+
That date is already excluded as a weekend and is not subtracted a second time. Duplicate holiday dates are also counted only once. Enter an observed replacement holiday separately if it applies.
Can I use a Friday–Saturday weekend?+
Yes. Select Friday–Saturday in the weekend setting. You can also select Sunday only or no weekend for a seven-day working schedule.