1. What is Weeks Between Dates Calculation?

The Weeks Between Dates calculation determines the exact number of weeks between two calendar dates. This is useful for project planning, pregnancy tracking, academic scheduling, and various time-sensitive applications.

2. How Does the Calculator Work?

The calculator uses the following formula:

Where:

• End Date — The later date in the range
• Start Date — The earlier date in the range
• 7 — Number of days in a week

Explanation: The calculation first determines the total days between dates, then divides by 7 to convert to weeks.

3. Importance of Weeks Calculation

Details: Accurate week calculations are essential for project management, medical tracking (like pregnancy), academic planning, and financial forecasting where weekly metrics are important.

4. Using the Calculator

Tips: Enter both dates in YYYY-MM-DD format. The start date should be earlier than the end date for meaningful results. The calculator accounts for leap years and varying month lengths automatically.

5. Frequently Asked Questions (FAQ)

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

Q2: How accurate is this calculation?
A: It's mathematically precise, accounting for all calendar variations including leap years.

Q3: Can I calculate weeks across different years?
A: Yes, the calculator works for any date range, regardless of year boundaries.

Q4: What's the maximum date range supported?
A: The calculator can handle any reasonable date range that PHP's DateTime can process (roughly years 100-9999).

Q5: Does time of day affect the calculation?
A: No, the calculation uses whole calendar days only, ignoring time components.