1. What Is Due Date Weeks Calculator?

The Due Date Weeks Calculator estimates your pregnancy due date and tracks week-by-week progress based on your last menstrual period (LMP). It helps monitor fetal development and prepare for delivery.

2. How Does The Calculator Work?

The calculator uses standard pregnancy calculations:

Where:

• \( EDD \) — Estimated Due Date
• \( LMP \) — Last Menstrual Period (start date)
• \( Current Date \) — Today's date or any specified date
• \( Week \) — Current pregnancy week (rounded down)

Explanation: Pregnancy is calculated as 40 weeks (280 days) from the first day of your last menstrual period, following standard obstetric practice.

3. Importance Of Pregnancy Week Tracking

Details: Tracking pregnancy weeks helps monitor fetal development milestones, schedule prenatal appointments, and prepare for labor and delivery. Each week brings specific developmental changes.

4. Using The Calculator

Tips: Enter the first day of your last menstrual period and the current date (defaults to today). The calculator will display your estimated due date, current pregnancy week, and weeks remaining.

5. Frequently Asked Questions (FAQ)

Q1: How accurate is the due date calculation?
A: The calculation is based on standard 40-week pregnancy duration. Actual delivery dates may vary by ±2 weeks from the estimated due date.

Q2: What if I don't know my LMP exactly?
A: Use your best estimate. Early ultrasound dating can provide more accurate gestational age if LMP is uncertain.

Q3: Why count from LMP instead of conception?
A: LMP is more reliably known than conception date. Medical professionals use LMP as the standard reference point.

Q4: How are pregnancy trimesters calculated?
A: First trimester: weeks 1-13, Second trimester: weeks 14-27, Third trimester: weeks 28-40.

Q5: Can due date change during pregnancy?
A: Yes, early ultrasound measurements may adjust the due date if there's significant discrepancy with LMP-based calculation.