Pregnancy Due Date Calculator

Calculate your pregnancy due date, conception date, and important milestones. Track your pregnancy journey with trimester breakdown and weekly development information.

Pregnancy Details

Enter the first day of your last menstrual period
Enter the estimated conception date
weeks days
Due Date
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Expected Delivery Date
Conception Date
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Current Week
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Days Remaining
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Progress
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Pregnancy Progress

Understanding Pregnancy Due Dates

How Due Dates Are Calculated

Due dates are typically calculated by adding 280 days (40 weeks) to the first day of your last menstrual period (LMP). This method assumes a regular 28-day cycle and ovulation on day 14.

Other Calculation Methods

  • Conception Date: Add 266 days to the date of conception.
  • Ultrasound: Early ultrasounds are often the most accurate for dating a pregnancy.
  • IVF Transfer Date: Specific calculations based on embryo age.

Due Dates Are Estimates

Only about 5% of babies are born on their exact due date. Most births occur within a week or two before or after the estimated date. It's important to view your due date as a guide rather than a strict deadline.

Frequently Asked Questions

Due date calculations are estimates based on a 40-week pregnancy. Only about 5% of babies are born on their exact due date, with most births occurring within 2 weeks before or after.

If you don't remember your LMP, you can use the conception date or ultrasound measurements. An early ultrasound is the most accurate method for dating pregnancy.

Ideally, prenatal care should begin as soon as you know you're pregnant, preferably within the first 8 weeks of pregnancy for optimal health monitoring.

First trimester often includes morning sickness and fatigue. Second trimester typically brings increased energy and baby movement. Third trimester involves rapid growth and preparation for birth.

Medical Disclaimer

Professional Medical Advice

This calculator is for informational purposes only and should not replace professional medical advice. Always consult with your healthcare provider for personalized guidance during pregnancy.

Calculation Accuracy

Due date calculations are estimates based on standard pregnancy duration. Only about 5% of babies are born on their exact due date. Individual pregnancies may vary significantly.

Emergency Situations

If you experience any concerning symptoms during pregnancy, contact your healthcare provider immediately. This tool cannot diagnose medical conditions or emergencies.

Tool Limitations

This calculator assumes a standard 28-day cycle and may not account for individual variations, medical conditions, or complications that could affect pregnancy duration.

Remember: Every pregnancy is unique. Regular prenatal care and communication with your healthcare team are essential for a healthy pregnancy journey.

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