1. What is the Pregnancy Date Calculator?

The Pregnancy Date Calculator estimates the due date based on the last menstrual period (LMP) using the standard formula of LMP plus 280 days. This provides an estimated delivery date for pregnancy planning and monitoring.

2. How Does the Calculator Work?

The calculator uses the EDD formula:

Where:

• \( EDD \) — Estimated Due Date
• \( LMP \) — Last Menstrual Period
• \( 280 \) — Standard pregnancy duration in days

Explanation: The calculation assumes a 40-week pregnancy duration from the first day of the last menstrual period, which corresponds to approximately 280 days.

3. Importance of EDD Calculation

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

4. Using the Calculator

Tips: Enter the first day of your last menstrual period in the date field. Ensure the date is accurate for the most reliable due date estimation.

5. Frequently Asked Questions (FAQ)

Q1: Why use 280 days for calculation?
A: 280 days represents the standard 40-week pregnancy duration calculated from the first day of the last menstrual period.

Q2: How accurate is this calculation?
A: This provides an estimated due date. Actual delivery dates can vary by ±2 weeks from the calculated EDD.

Q3: What if my cycle is irregular?
A: For women with irregular cycles, early ultrasound dating may provide a more accurate due date estimate.

Q4: When should I confirm with healthcare provider?
A: Always confirm your due date with your healthcare provider, who may adjust it based on ultrasound measurements and clinical assessment.

Q5: Can this be used for IVF pregnancies?
A: For IVF pregnancies, the calculation is typically based on the embryo transfer date rather than LMP.