1. What is the Days Between Dates Calculator?

This calculator computes the number of days between two calendar dates and allows adding additional days to the result. It's useful for project planning, deadline calculations, and various scheduling needs.

2. How Does the Calculator Work?

The calculator uses the following formula:

Where:

• \( Date1 \) — The start date
• \( Date2 \) — The end date
• \( Added \) — Additional days to include in the total

Explanation: The calculator first computes the exact calendar days between two dates, then adds any additional days specified by the user.

3. Importance of Date Calculations

Details: Accurate day counting between dates is essential for project management, legal deadlines, financial calculations, and various planning purposes.

4. Using the Calculator

Tips: Enter the start date, end date, and any additional days you want to include in the total. The calculator will compute the total days between dates plus your additional days.

5. Frequently Asked Questions (FAQ)

Q1: Are the days counted inclusive or exclusive?
A: The calculation counts all calendar days between the two dates, including the start date but excluding the end date.

Q2: Does this account for leap years?
A: Yes, the PHP DateTime class automatically accounts for leap years in its calculations.

Q3: What's the maximum date range this can handle?
A: The calculator can handle any valid dates from year 1 to year 9999.

Q4: Can I subtract days instead of adding?
A: Yes, simply enter a negative number in the "Additional Days" field to subtract days from the total.

Q5: Does this include weekends and holidays?
A: This calculates all calendar days. For business days only, you would need a different calculator.