Pregnancy Conception Calculator
Calculate your conception date and possible conception range
Understanding Conception
Calculation Methods
- Due Date:
Conception typically occurs 266 days before the due date
- Last Period:
Conception usually occurs 11-21 days after the first day of the last period
- Ultrasound:
Most accurate in early pregnancy, measures fetal development directly
Important Notes
- Conception vs. Fertilization:
Conception includes both fertilization and implantation in the uterus
- Accuracy:
Results are estimates based on typical pregnancy timelines