1. What Is Pregnancy Due Date Calculation?

The pregnancy due date calculation based on ovulation date estimates the expected delivery date by adding 266 days to the known ovulation date. This method provides a more accurate estimation than traditional last menstrual period calculations when the ovulation date is known.

2. How Does The Calculator Work?

The calculator uses the following formula:

Where:

• \( EDD \) — Estimated Due Date
• \( Ovulation Date \) — Known date of ovulation
• \( 266 days \) — Standard gestation period from ovulation

Explanation: This calculation assumes a standard human gestation period of 266 days (38 weeks) from the date of ovulation to estimated delivery.

3. Importance Of Due Date Calculation

Details: Accurate due date estimation is crucial for proper prenatal care, monitoring fetal development, planning for delivery, and identifying potential pregnancy complications.

4. Using The Calculator

Tips: Enter the known ovulation date in the date picker. The calculator will automatically compute the estimated due date by adding 266 days to the ovulation date.

5. Frequently Asked Questions (FAQ)

Q1: Why 266 days from ovulation?
A: 266 days represents the average gestation period from ovulation to delivery in humans, equivalent to 38 weeks of pregnancy.

Q2: How accurate is this calculation?
A: When the ovulation date is known precisely, this method is more accurate than last menstrual period calculations, with only about 5% of women delivering exactly on their due date.

Q3: What if I don't know my ovulation date?
A: If ovulation date is unknown, use the last menstrual period method (LMP + 280 days) or consult with your healthcare provider for ultrasound dating.

Q4: Can due dates change during pregnancy?
A: Yes, healthcare providers may adjust due dates based on ultrasound measurements, especially if there's a significant discrepancy from the initial calculation.

Q5: What percentage of babies are born on their due date?
A: Only about 5% of babies are born exactly on their due date. Most births occur within two weeks before or after the estimated due date.