1. What is Business Days Calculation?

Business days calculation determines the number of working days between two dates, excluding weekends (typically Saturday and Sunday) and specified holidays. This is important for project planning, delivery estimates, and business operations.

2. How Does the Calculator Work?

The calculator uses the following formula:

Where:

• \( Total\ Days \) — Calendar days between dates
• \( Weekends \) — Saturdays and Sundays in the period
• \( Holidays \) — Specified non-weekend holidays in the period

Explanation: The calculation counts all days between two dates, then subtracts weekends and any specified holidays that fall on weekdays.

3. Importance of Business Days Calculation

Details: Accurate business day calculations are essential for project timelines, service level agreements, financial settlements, and any business process that depends on working days rather than calendar days.

4. Using the Calculator

Tips: Enter the target date, current date (defaults to today), and any holidays (comma separated in YYYY-MM-DD format). The calculator will exclude weekends and specified holidays from the total day count.

5. Frequently Asked Questions (FAQ)

Q1: What counts as a weekend day?
A: By default, Saturdays and Sundays are considered weekend days. Some calculators allow customization of weekend days.

Q2: How are holidays handled?
A: Only holidays you specify that fall on weekdays (Monday-Friday) are excluded. Holidays on weekends are already excluded by the weekend calculation.

Q3: Does the calculation include the start or end date?
A: The calculation includes the start date but excludes the end date (similar to how "days until" is typically calculated).

Q4: Can I use this for international calculations?
A: Yes, as long as you specify the correct holidays for your country/region. The weekend days (Sat/Sun) are standard in most countries.

Q5: What date format should I use?
A: Use YYYY-MM-DD format (e.g., 2025-12-25) for both the date inputs and holiday list.