Working Days Calculator
Calculate business days between dates, excluding weekends and holidays for accurate project planning
Date Range
First day of the project
Last day of the project
Check if your team works on weekends
Holidays
| Holiday Name | Date | Day of Week | Actions |
|---|---|---|---|
| Wednesday | |||
| Monday |
Working Days Methodology
Business Days Calculation:
- Weekend Days: Saturday and Sunday are excluded by default
- Holidays: Specified holiday dates are excluded from working days
- Inclusive Counting: Both start and end dates are included in calculations
Standard Work Week Assumptions:
- Monday - Friday: Standard working days (5 days per week)
- Saturday - Sunday: Non-working days (2 days per week)
- Holidays: Additional non-working days that vary by region/organization
Common Business Day Calculations:
Standard Work Year: ~252 business days (52 weeks × 5 days - holidays)
Typical Quarter: ~63 business days (252 ÷ 4)
Typical Month: ~21 business days (252 ÷ 12)
Project Planning Best Practices
- Account for Holidays: Include company-specific and regional holidays
- Buffer Time: Add 10-20% buffer to working day estimates
- Team Availability: Consider individual team member vacation days
- Seasonal Factors: Account for holiday periods that reduce productivity
- Time Zones: Consider time zone differences for distributed teams
- Critical Path Analysis: Use working days for critical path calculations
- Resource Planning: Align working days with resource availability
- Milestone Planning: Set milestones based on working day intervals
Common Use Cases
Project Management
- Calculate project duration in business days
- Plan sprint lengths and iterations
- Schedule milestone dates
- Resource allocation planning
Business Operations
- Service Level Agreement (SLA) calculations
- Processing time estimates
- Delivery timeline planning
- Budget period calculations
Related Calculators
Working Days Tips
- Plan Ahead: Account for holidays well in advance
- Team Calendars: Sync with team member vacation schedules
- Regional Differences: Consider holidays for distributed teams
- Flexibility: Some projects may require weekend work
- Productivity: Factor in reduced productivity around holidays
Global Working Days
- US Standard: ~252 business days/year
- European: ~230-240 business days/year
- Middle East: Often Sunday-Thursday work weeks
- Construction: Weather-dependent working days
- Retail: Often includes weekends
Common Holidays to Include
- New Year's Day (January 1)
- Memorial Day (May)
- Independence Day (July 4)
- Labor Day (September)
- Thanksgiving (November)
- Christmas Day (December 25)
- Company-specific holidays
- State/local holidays
Advanced Features
- Custom Work Weeks: Set custom working day patterns
- Partial Days: Account for half-days or reduced hours
- Multiple Calendars: Different schedules for different teams
- Recurring Holidays: Annual holiday patterns