1. What is Week Calculation Between Dates?

The week calculator determines the number of weeks between two dates. This is useful for project planning, pregnancy tracking, academic scheduling, and any situation where you need to measure time in weeks.

2. How Does the Calculator Work?

The calculator uses the simple formula:

Where:

• \( Date1 \) — The earlier start date
• \( Date2 \) — The later end date
• The difference is calculated in days, then divided by 7

Explanation: The calculation first determines the total number of days between the two dates, then converts this to weeks by dividing by 7.

3. Importance of Week Calculation

Details: Calculating weeks between dates helps in precise time management, tracking progress over fixed periods, and scheduling recurring weekly events.

4. Using the Calculator

Tips: Enter both dates in YYYY-MM-DD format. The calculator will automatically determine which date is earlier and calculate accordingly.

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, calculating exact days between dates then converting to weeks.

Q3: Does it account for daylight saving time?
A: No, week calculations are not affected by time changes as they use calendar dates.

Q4: Can I calculate weeks from today?
A: Yes, use today's date as either Date1 or Date2 depending on whether you're calculating forward or backward.

Q5: What's the maximum date range this can handle?
A: The calculator can handle any valid date range supported by PHP's DateTime class (roughly years 0-9999).