Working Days Calculator
Calculate business days between two dates excluding weekends and custom holidays.
Equivalent to 168 standard working hours (8h/day).
About the Working Days Calculator
The Working Days Calculator helps project managers, HR professionals, freelancers, and operations teams determine the exact number of active business days between two dates. It filters out non-working weekend days and custom designated public or company holidays.
How to Use This Calculator
- Select your Start Date and End Date.
- Select your Weekend Pattern (e.g., Saturday & Sunday, Friday & Saturday, or Sunday only).
- Add any Custom Holiday Dates to exclude.
- Click Calculate to inspect total calendar days, active work days, and non-working days.
Calculation Method & Mathematical Formula
WorkingDays = TotalCalendarDays - WeekendDaysInPeriod - UniqueHolidaysFallingOnWorkingDays
Worked Example
Scenario: October 1, 2026 to October 31, 2026 (Mon-Fri workweek, 1 Holiday on Oct 12):
- Total Calendar Days: 31 Days.
- Weekend Days (Saturdays & Sundays): 9 Days.
- Excluded Holidays: 1 Day.
- Net Working Days: 21 Working Days (168 working hours at 8 hrs/day).
Important Calendar Notes
Public holidays vary significantly by country, state, and organization. Enter your specific organizational holidays for guaranteed compliance.