Conception Calculator
Estimate when conception occurred based on your due date or last menstrual period.
Calculate Conception Date
days
Typical range: 21-35 days (default is 28)
How Conception Works
Conception typically occurs during ovulation, which happens about 14 days before your next expected period. For a standard 28-day cycle, this is around day 14.
- Ovulation: An egg is released from the ovary and is viable for 12-24 hours.
- Sperm Survival: Sperm can survive in the reproductive tract for up to 5 days.
- Fertile Window: The 6 days leading up to and including ovulation.
⚠️ This calculator provides estimates only. Actual conception date may vary based on individual cycle variations and other factors.
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