Business Days Calculator
Calculate the exact number of working days between two dates, or add/subtract business days excluding weekends and custom public holidays.
How to Use the Business Days Calculator
Enter the required values in the fields above and click Calculate. All calculations are executed directly inside your web browser using proven mathematical formulas, ensuring instantaneous results and 100% privacy without transmitting your numbers to remote servers.
Mathematical Formula
Worked Example
Between Monday, Nov 2, 2026 and Monday, Nov 30, 2026 (excluding end date): 28 calendar days contain 8 weekend days (4 Saturdays, 4 Sundays). 28 - 8 = 20 business days.
Common Business Day Duration Quick Guide
| Calendar Weeks | Total Days | Standard Working Days (Sat-Sun Off) | Working Hours (8 hr/day) | Typical Context |
|---|---|---|---|---|
| 1 Week | 7 days | 5 business days | 40 hours | Sprint cycle / Payroll processing |
| 2 Weeks | 14 days | 10 business days | 80 hours | Notice period / Bi-weekly sprint |
| 30 Calendar Days | 30 days | 21–22 business days | 168–176 hours | Monthly invoice payment term (Net 30) |
| 60 Calendar Days | 60 days | 42–44 business days | 336–352 hours | Quarterly milestone / Net 60 terms |
Important Notes & Limitations
Public and statutory holidays vary by country, province, and company policy. Use the "+ Add Holiday" tool to exclude specific bank and regional holidays from your date range.
Want an in-depth walkthrough? Read our full guide on How to Calculate Business Days: Excluding Weekends & Holidays → with complete step-by-step examples and formula breakdowns.
Frequently Asked Questions
By standard convention, date interval calculations do not count the end date (treating it as an open boundary: Start ≤ Date < End). Check 'Include End Date' if your deadline includes work done on the final day.
Our calculator automatically detects if an entered holiday coincides with a Saturday or Sunday, ensuring weekend days are never double-deducted from your working day total.
Yes. Select 'Friday & Saturday' in the Weekend Days Policy dropdown to calculate working days for countries observing Sunday-to-Thursday work weeks.