1. What is the Due Date from Ovulation Calculator?

This calculator estimates pregnancy due date based on the known ovulation date. It adds 266 days (38 weeks) to the ovulation date, which is the typical gestation period from conception to birth.

2. How Does the Calculator Work?

The calculator uses the simple formula:

Explanation: Human pregnancy typically lasts 266 days (38 weeks) from conception (ovulation) to birth. This is more accurate than calculating from the last menstrual period (LMP), which assumes a standard 28-day cycle with ovulation on day 14.

3. Importance of Accurate Due Date Calculation

Details: Knowing the accurate due date helps in proper prenatal care scheduling, monitoring fetal development, and planning for delivery. It's particularly important for women with irregular cycles where LMP-based calculations may be inaccurate.

4. Using the Calculator

Tips: Enter the known ovulation date. If you used ovulation predictor kits or temperature charting, use that date for most accurate results. The calculator will add 266 days to give the estimated due date.

5. Frequently Asked Questions (FAQ)

Q1: Why 266 days from ovulation?
A: Research shows the average gestation from conception to birth is 266 days (38 weeks). This is more biologically accurate than the 280-day (40-week) LMP-based calculation.

Q2: How accurate is this calculation?
A: Very accurate if you know your exact ovulation date. Only about 5% of women deliver on their due date, but most deliver within 2 weeks before or after.

Q3: What if I don't know my ovulation date?
A: If you know your LMP and have regular cycles, you can estimate ovulation as 14 days before your next expected period.

Q4: Does this work for IVF pregnancies?
A: Yes, it's especially accurate for IVF since the conception date is precisely known.

Q5: Why is this different from my doctor's due date?
A: Many doctors still use the LMP method (adding 280 days). This calculator gives a more biologically accurate estimate when ovulation date is known.