1. What is Pregnancy Week Calculation?

Pregnancy week calculation helps expectant mothers and healthcare providers track fetal development and schedule important prenatal tests. It's typically calculated from the first day of the last menstrual period (LMP) or through ultrasound measurements.

2. How Does the Calculator Work?

The calculator uses the due date to determine current pregnancy week:

Where:

• Due Date — Estimated date of delivery (typically 280 days/40 weeks from LMP)
• Current Date — Today's date or any date you want to check

Explanation: The calculation counts backward from the due date to determine how many weeks pregnant you are at any given date.

3. Importance of Tracking Pregnancy Weeks

Details: Accurate pregnancy dating is crucial for proper prenatal care, timing of tests, monitoring fetal growth, and determining if the baby is premature or post-term.

4. Using the Calculator

Tips: Enter your due date (as provided by your healthcare provider) and the current date (defaults to today). The calculator will show your current pregnancy week and time remaining until delivery.

5. Frequently Asked Questions (FAQ)

Q1: How accurate is this calculation?
A: It's accurate if your due date is correct. Early ultrasound dating (first trimester) is most accurate for determining due date.

Q2: Why 280 days for pregnancy?
A: Human pregnancy averages 280 days (40 weeks) from the first day of the last menstrual period, though normal pregnancies can range from 37-42 weeks.

Q3: What if I don't know my exact due date?
A: Consult your healthcare provider for an ultrasound to estimate your due date more accurately.

Q4: Does this account for leap years?
A: Yes, the calculator automatically accounts for leap years in the date calculations.

Q5: Can I use this for twins/multiples?
A: While the calculation method is the same, multiples often deliver earlier. Consult your doctor for specific guidance.