Due Date Calculator

Accurately estimate your expected due date based on various calculation methods. Plan your pregnancy journey with confidence and prepare for your baby's arrival.

Calculate Your Due Date

Select your preferred calculation method and enter the required information to estimate your baby's due date.

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21 days Average 45 days

Your Due Date Results

Calculate Your Due Date

Fill in your information on the left and click "Calculate Due Date" to see your estimated due date and pregnancy timeline.

How Due Dates Are Calculated

Healthcare providers use several methods to estimate your due date, including the first day of your last menstrual period, ultrasound measurements, and physical exams.

  • Naegele's Rule: Adds 280 days to the first day of your LMP
  • Ultrasound measurements are most accurate in the first trimester
  • Only about 5% of babies are born on their exact due date

Why Due Date Estimation Matters

An accurate due date helps your healthcare provider monitor your pregnancy, schedule tests, and plan for a safe delivery.

  • Early ultrasound scans can detect potential issues early
  • Knowing your due date helps with prenatal planning
  • It assists in determining the appropriate timing for inductions

When to Contact Your Healthcare Provider

While due dates are estimates, certain signs indicate it's time to reach out to your healthcare provider.

  • Regular contractions less than 5 minutes apart
  • Water breaking or fluid leakage
  • Decreased fetal movement or severe abdominal pain

Frequently Asked Questions