Pregnancy Conception Calculator
Estimate your conception date and window based on due date, last period, or ultrasound date
Most Likely Conception Date
October 15, 2023
This is the estimated date when ovulation and conception occurred.
Conception Window
October 10, 2023 – October 15, 2023
This 5-day period accounts for sperm viability (3-5 days) and the 24-hour window when the egg is available for fertilization.
Understanding Your Results
Conception typically occurs 11-21 days after the first day of your last menstrual period. Our calculation accounts for sperm viability (3-5 days) and the 24-hour window when the egg is available.
The conception window represents the period during which sexual intercourse could have led to pregnancy. The most likely conception date is the estimated day of ovulation and fertilization.
Note: This calculator provides estimates only. Actual conception dates can vary based on individual factors. Always consult with your healthcare provider for accurate pregnancy dating.
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