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Pregnancy Due Date Calculator

Calculate Due Date

Results

Enter your information above to calculate due date

About Pregnancy Due Date Calculator

This calculator helps you estimate your pregnancy due date using different methods including the first day of your last menstrual period, estimated conception date, or ultrasound measurements.

Calculation Methods:

  • LMP Method: Adds 280 days (40 weeks) to the first day of your last period
  • Conception Method: Adds 266 days (38 weeks) to the estimated conception date
  • Ultrasound Method: Uses ultrasound measurements for more accurate dating

Note:

Only about 5% of babies are born on their exact due date. Most babies are born within 2 weeks before or after the estimated due date. Always consult with your healthcare provider for personalized pregnancy care.