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 calculator first calculates the total number of days between the two 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 any scenario where precise time measurement in weeks is required.

4. Using the Calculator

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

5. Frequently Asked Questions (FAQ)

Q1: Does this count calendar weeks or just 7-day periods?
A: This calculates exact 7-day periods between dates, not calendar weeks (Sunday-Saturday).

Q2: How are partial weeks handled?
A: Partial weeks are shown as decimal values (e.g., 3.57 weeks).

Q3: Does the calculation include both start and end dates?
A: The calculation includes the start date but excludes the end date in the count.

Q4: What's the maximum date range this can handle?
A: The calculator can handle any valid date range supported by PHP's DateTime class.

Q5: Can I calculate weeks between dates in the future?
A: Yes, the calculator works for past, present, and future dates.