Understanding when conception occurred helps you track your pregnancy journey and prepare for your baby's arrival. Our free conception calculator provides accurate estimates of your conception date, due date, and important pregnancy milestones.
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Pregnancy typically lasts about 40 weeks from the start of your last menstrual period (LMP) to birth. Here's what these dates mean:
Conception usually occurs 11-21 days after the first day of your last period, during ovulation. This two-week window accounts for variations in women's cycles and sperm survival time.
Your estimated due date (EDD) is calculated as 280 days (40 weeks) from the first day of your last period. Only about 4% of babies are born on their exact due date, with most arriving within two weeks before or after.
Our timeline highlights crucial developmental stages and medical checkpoints throughout your pregnancy journey. Key milestones include:
While our conception calculator provides accurate estimates based on standard pregnancy durations, every pregnancy is unique. Always consult your healthcare provider for personalized medical advice and to confirm your specific dates.