1. What is Date Addition/Subtraction?

This calculator allows you to add or subtract a specific number of days from a given date. It's useful for project planning, scheduling, and determining past or future dates.

2. How Does the Calculator Work?

The calculator uses the simple formula:

Where:

• \( Date \) — The starting date
• \( Days \) — Number of days to add or subtract
• \( \pm \) — Addition or subtraction operation

Explanation: The calculator accurately accounts for month lengths, leap years, and other calendar variations when performing date arithmetic.

3. Importance of Date Calculation

Details: Date calculations are essential for project management, event planning, financial calculations (like interest accrual), and historical date analysis.

4. Using the Calculator

Tips: Enter a valid date in YYYY-MM-DD format, specify the number of days to add or subtract, and select the operation type (add or subtract).

5. Frequently Asked Questions (FAQ)

Q1: Does this account for leap years?
A: Yes, the calculator automatically accounts for leap years and varying month lengths.

Q2: What's the maximum number of days I can add/subtract?
A: There's no practical limit, but extremely large values may cause browser performance issues.

Q3: Can I use this for business days only?
A: This calculator includes all days (weekends and holidays). For business day calculations, a more specialized calculator is needed.

Q4: What date format is used?
A: The calculator uses the standard YYYY-MM-DD format for both input and output.

Q5: Can I calculate time differences between two dates?
A: This calculator is for adding/subtracting days from a date. For difference between dates, use a date difference calculator.