Conception Date Calculator
Calculate your conception date, due date, and fertility window based on your menstrual cycle. Get precise pregnancy dating and ovulation estimates.
Step 1: Cycle Information
Cycle Information
Most women have a menstrual cycle of 28 days with ovulation occurring around day 14. Your luteal phase (time after ovulation) is typically 14 days.
Step 2: Pregnancy Details
About Conception Dates
Conception typically occurs during ovulation, about 14 days before your next period. Pregnancy is dated from the first day of your last menstrual period (LMP), which is about 2 weeks before conception.
Conception Date Calculation Results
Most Likely Conception Date
Key Pregnancy Dates
Understanding Pregnancy Dating
Pregnancy is calculated as 40 weeks from the first day of your last menstrual period (LMP). Conception typically occurs about 2 weeks after LMP during ovulation. Your due date is an estimate – only 5% of babies are born on their exact due date.
Pregnancy Timeline & Development
Pregnancy Milestones
Important Pregnancy Milestones
First trimester (weeks 1-12): Organ development. Second trimester (weeks 13-27): Growth and movement. Third trimester (weeks 28-40): Final growth and preparation for birth.
Need Professional Medical Advice?
Always consult with a healthcare provider for accurate pregnancy dating, prenatal care, and fertility guidance. This calculator provides estimates only.
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