1. What Are Business Days?

Business days typically refer to Monday through Friday, excluding weekends (Saturday and Sunday) and public holidays. They are commonly used in business, finance, and project planning to calculate deadlines, delivery times, and service level agreements.

2. How Business Days Are Calculated

The calculator uses the following formula:

Where:

• Total Days — Calendar days between start and end date (inclusive)
• Weekend Days — Number of Saturdays and Sundays in the period
• Holidays — Number of public holidays that fall on weekdays

Explanation: The calculation accounts for all days between two dates, then subtracts non-working days to determine actual business days.

3. Importance of Business Days Calculation

Details: Accurate business days calculation is crucial for contract fulfillment, project planning, SLA compliance, financial calculations (like interest accrual), and legal deadlines.

4. Using the Calculator

Tips: Enter the start and end dates (in YYYY-MM-DD format). Optionally add holidays as comma-separated dates. The calculator will exclude weekends and specified holidays that fall on weekdays.

5. Frequently Asked Questions (FAQ)

Q1: Are business days the same worldwide?
A: No, the definition varies by country. This calculator uses the common Monday-Friday week, but some countries have different weekend days.

Q2: How are holidays handled?
A: Only holidays that fall on weekdays are subtracted. Holidays on weekends don't reduce business days further.

Q3: Does the calculator include the start and end dates?
A: Yes, both the start and end dates are included in the calculation if they are business days.

Q4: Can I customize the weekend days?
A: This version assumes Saturday-Sunday weekends. For other configurations (like Friday-Saturday weekends in some countries), you would need a modified calculator.

Q5: What date format should I use?
A: Use YYYY-MM-DD format (e.g., 2023-12-31) for all dates, including holidays.