Working Days
Count business days
Working Days Calculator
Calculate business days between two dates (Mon-Fri)
Working Days Result
About Working Days Calculator
The Working Days Calculator helps you calculate the number of business days (Monday-Friday) between any two dates. Perfect for project planning, delivery estimates, and business timelines.
Unlike calendar days which include weekends, working days are more useful for business contexts where work typically doesn't happen on Saturdays and Sundays. Both the start and end dates are included in the calculation.
Whether you're estimating project completion dates, shipping delivery times, or calculating work periods, this calculator provides accurate working day counts instantly.
How to Use This Working Days Calculator
Step 1: Select your start date using the date picker.
Step 2: Select your end date using the date picker.
Step 3: Click "Calculate Working Days" to see the result.
Step 4: Review your working days, total days, and weekend days.
Step 5: Use the quick example buttons to test the calculator.
Step 6: Use Reset to clear all inputs and start over.
Why Use a Working Days Calculator?
✓ Project Planning
Estimate project completion dates accurately. Know exactly how many working days you have to complete deliverables.
✓ Delivery Estimates
Calculate shipping and delivery times. Know when packages will arrive based on business days.
✓ Work Schedule Planning
Plan work schedules, shifts, and staffing needs. Understand how many working days are available.
✓ Contract Deadlines
Calculate business day deadlines for contracts, payments, and legal documents. Ensure compliance with timelines.
Quick Examples
Working Days by Month (2025)
| Month | Working Days | Notes |
|---|---|---|
| January | 22-23 | New Year's Day holiday |
| February | 20-21 | Shortest month |
| March | 21-22 | No major holidays |
| April | 21-22 | Easter/Spring holidays |
| May | 21-22 | Memorial Day (US) |
| June | 21-22 | Summer starts |
| July | 22-23 | Independence Day (US) |
| August | 22-23 | Summer holidays |
| September | 21-22 | Labor Day (US) |
| October | 22-23 | Columbus Day (US) |
| November | 20-21 | Thanksgiving (US) |
| December | 21-22 | Christmas holidays |
* Approximate working days per month (excluding weekends). Actual days vary by year and public holidays.
Project Timeline Tips
- 💡Always add buffer time: Add 15-20% extra working days to your estimates for unexpected delays. Projects almost always take longer than planned.
- 💡Consider holidays: Check if any public holidays fall within your date range. These reduce available working days significantly.
- 💡Plan in working days, not calendar days: When communicating deadlines with clients or team members, use working days to avoid confusion about weekend availability.
- 💡Use project management tools: Integrate working day calculations into your project management software for accurate milestone planning.
- 💡Account for team schedules: If your team works a different schedule (e.g., 4-day work week), adjust your working day definition accordingly.
Working Days Tips
- 💡Both dates are included: Our calculator includes both the start and end dates in the count. If you want to exclude the start date, use the day after.
- 💡Weekend definition: Our calculator considers Saturday and Sunday as weekends. Some countries have different weekend days (e.g., Friday-Saturday).
- 💡Legal and financial use: Many legal documents use 'business days' for deadlines. Always clarify if the count includes the start date or excludes it.
- 💡Shipping estimates: Shipping carriers typically count business days from the pickup date. Check their specific business day policy.
- 💡Save your results: Take a screenshot or note your working day count for reference. Useful for project documentation.
Frequently Asked Questions
Built and maintained by Sanjay Singh · Founder, Numrexo
Builds and maintains every calculator on Numrexo. Fifteen years working with numbers in real estate and digital marketing.
Last updated: · Calculations run in your browser. Nothing you enter is sent to us or stored.