Pregnancy Due Date Calculator - Free Online Due Date Estimator

Pregnancy Due Date Calculator

Calculate your estimated due date based on your last menstrual period

days
Most women have cycles lasting 28 days

How to Use This Calculator

  1. Enter the first day of your last menstrual period
  2. Adjust your average cycle length if different from 28 days
  3. Click "Calculate" to see your pregnancy timeline

Important Notes

  • This calculator provides an estimate based on a standard pregnancy duration of 40 weeks
  • Only 5% of babies are born on their exact due date
  • A normal pregnancy can range from 37 to 42 weeks
  • Your healthcare provider may adjust your due date based on ultrasound results
  • Always consult with your healthcare provider for personalized medical advice