1. What is the Ovulation and Due Date Calculator?

This calculator estimates ovulation date and pregnancy due date based on the last menstrual period (LMP). It uses standard medical formulas to predict these important dates for pregnancy planning.

2. How Does the Calculator Work?

The calculator uses these formulas:

Where:

• LMP — First day of last menstrual period
• Ovulation Date — Estimated day of ovulation (typically 14 days after LMP)
• Due Date — Estimated delivery date (typically 266 days after ovulation)

Explanation: The calculation assumes a regular 28-day cycle with ovulation on day 14. The due date is calculated as 38 weeks (266 days) from conception.

3. Importance of Tracking Ovulation

Details: Knowing your ovulation date helps with conception planning and understanding your fertility window. The due date helps prepare for pregnancy and monitor fetal development.

4. Using the Calculator

Tips: Enter the first day of your last menstrual period (LMP) in the format YYYY-MM-DD. The calculator will estimate your ovulation date and pregnancy due date.

5. Frequently Asked Questions (FAQ)

Q1: How accurate is this calculator?
A: It provides estimates based on averages. Individual cycles may vary, especially if your cycle isn't 28 days.

Q2: What if my cycle isn't 28 days?
A: For irregular cycles, ovulation typically occurs about 14 days before your next period. You may need to adjust calculations.

Q3: Why 266 days for pregnancy?
A: Pregnancy is typically 266 days from conception or 280 days (40 weeks) from LMP.

Q4: When is the fertile window?
A: Typically 5 days before ovulation and the day of ovulation itself.

Q5: Should I rely solely on this calculator?
A: For medical purposes, consult with a healthcare provider. Ultrasound dating is more accurate.