Loading your tools...
Loading your tools...
Calculate your conception date with our advanced pregnancy calculator. Get personalized trimester guidance, nutrition tips, exercise recommendations, and comprehensive week-by-week pregnancy insights.
Medical Disclaimer
This calculator provides estimates only. Always consult with your healthcare provider for accurate pregnancy dating and medical advice.
Conception Date: The estimated date when fertilization occurred, typically 11-21 days after the first day of your last menstrual period.
Conception Range: A four-day timeframe during which fertilization most probably occurred, taking into consideration that sperm can remain viable in the reproductive tract for 3-5 days.
Gestational Age: The age of the pregnancy calculated from the first day of the last menstrual period, not the actual conception date.
Choose Calculation Method: Select Due Date, Last Menstrual Period, or Ultrasound Date.
Enter Your Information: Provide the required dates based on your chosen method.
Get Personalized Results: Receive detailed conception date estimates and trimester info.
Track Your Progress: Monitor pregnancy milestones and get week-by-week insights.
Review Recommendations: Check nutrition, exercise, and health tips for your stage.
Expectant Mothers: Calculate conception date and track pregnancy progress.
Healthcare Providers: Verify gestational age and plan prenatal care.
Family Planning: Understand fertility windows and conception timing.
Health Monitoring: Track symptoms and milestones throughout pregnancy.
Education: Learn about fetal development and maternal health.
Conception typically occurs about 11-21 days after the first day of your last menstrual period. However, sperm can survive for up to 5 days, creating a "fertile window." Our calculator estimates the most likely conception date range based on your inputs.
Gestational Age: Measured from the first day of your last period. This is the standard used by doctors.
Conception Age: Measured from the actual date of fertilization. This is usually about 2 weeks less than gestational age.
Different women have different cycle lengths and information available. By offering calculations based on Due Date, LMP, and Ultrasound, we ensure you can use the most accurate data you have to get the best estimate.
If you have an ultrasound date, use that! Early ultrasounds are generally the most accurate way to date a pregnancy, especially if you have irregular periods.