1. What is a Time Duration Calculator in Weeks?

Definition: This calculator estimates the duration between two dates measured in weeks.

Purpose: It helps project managers, event planners, and anyone needing to measure time intervals in weeks rather than days or months.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( W \) — Duration in weeks
• \( D_2 \) — End date (in days)
• \( D_1 \) — Start date (in days)
• 7 — Days per week (constant)

Explanation: The difference between dates is calculated in days, then divided by 7 to convert to weeks.

3. Importance of Time Duration Calculation

Details: Accurate time measurement is crucial for project planning, scheduling, and meeting deadlines.

4. Using the Calculator

Tips: Enter the start and end dates. The calculator will automatically compute the duration in weeks.

5. Frequently Asked Questions (FAQ)

Q1: Does this include partial weeks?
A: Yes, the result shows decimal values for partial weeks (e.g., 3.57 weeks).

Q2: What if my end date is before my start date?
A: The calculator will return a negative value indicating the time span in reverse.

Q3: How precise is this calculation?
A: It calculates exact days between dates, then divides by 7 for weeks.

Q4: Does this account for leap years?
A: Yes, the PHP DateTime class automatically accounts for leap years in its calculations.

Q5: Can I calculate weeks between today and a future date?
A: Yes, just use today's date as the start date and your target date as the end date.