1. What is Pregnancy Date Calculator?

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

2. How Does the Calculator Work?

The calculator uses the pregnancy date calculation 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 is the standard method used in obstetric practice.

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. The calculator will automatically compute and display your estimated due date.

5. Frequently Asked Questions (FAQ)

Q1: Why is 280 days used for pregnancy calculation?
A: 280 days represents 40 weeks of pregnancy, which is the standard duration calculated from the first day of the last menstrual period.

Q2: How accurate is this calculation method?
A: This method provides a good estimate, but actual delivery dates may vary. Only about 5% of women deliver exactly on their estimated due date.

Q3: What if I don't know my LMP exactly?
A: If LMP is uncertain, an ultrasound examination in early pregnancy can provide a more accurate due date estimation.

Q4: Does this work for all menstrual cycle lengths?
A: This calculation assumes a standard 28-day cycle. Women with significantly longer or shorter cycles may need adjustment.

Q5: When should I confirm my due date with a doctor?
A: It's recommended to confirm the due date with healthcare providers during the first prenatal visit for accurate pregnancy monitoring.