Pregnancy Calculator
Calculate your due date, track pregnancy progress, and discover important milestones
Pregnancy Information
About Pregnancy Calculation
Understanding how pregnancy dates are calculated and what to expect
Calculation Methods
Last Menstrual Period (LMP)
Most common method. Adds 280 days (40 weeks) to the first day of your last period.
Conception Date
If you know when conception occurred, adds 266 days (38 weeks) to that date.
Due Date
If you already know your due date, calculates backwards to estimate other dates.
Important Notes
• Only about 5% of babies are born on their exact due date
• Full-term pregnancy is 37-42 weeks
• First babies often arrive 1-2 weeks late
• Ultrasound dating may be more accurate
• Consult your healthcare provider for medical advice
Disclaimer
This calculator provides estimates based on standard pregnancy calculations. Always consult with your healthcare provider for accurate dating and medical advice. Individual pregnancies may vary, and medical supervision is essential.