1. What is Naegele's Rule?

Naegele's Rule is a standard way of calculating the estimated due date (EDD) for a pregnancy based on the first day of the woman's last menstrual period (LMP). It assumes a gestational period of 280 days (40 weeks).

2. How Does the Calculator Work?

The calculator uses Naegele's Rule formula:

Where:

• \( EDD \) — Estimated Due Date
• \( LMP \) — First day of Last Menstrual Period

Explanation: The calculation adds 280 days (40 weeks) to the first day of the last menstrual period to estimate the due date.

3. Importance of EDD Calculation

Details: Accurate due date estimation is crucial for prenatal care planning, monitoring fetal development, and preparing for delivery.

4. Using the Calculator

Tips: Enter the first day of your last menstrual period in the date field. The calculator will automatically compute your estimated due date.

5. Frequently Asked Questions (FAQ)

Q1: How accurate is Naegele's Rule?
A: Naegele's Rule provides a general estimate. Actual delivery dates may vary by ±2 weeks from the calculated due date.

Q2: What if I don't know my LMP?
A: If you're unsure of your LMP, an ultrasound examination can provide a more accurate estimation of gestational age and due date.

Q3: Does this work for all menstrual cycle lengths?
A: Naegele's Rule assumes a 28-day menstrual cycle. Women with significantly longer or shorter cycles may need adjustments to the calculation.

Q4: When should I consult a healthcare provider?
A: Always consult with a healthcare provider for personalized prenatal care and accurate due date estimation.

Q5: Can this calculator be used for multiple pregnancies?
A: While the calculation method is the same, multiple pregnancies often have different considerations and should be monitored by healthcare professionals.