Pregnancy Calculator - EDD & Gestational Age

Pregnancy Calculator

Calculate Expected Date of Delivery (EDD) & Current Gestational Age

Expected Date of Delivery

Current Gestational Age

How It Works

  • Naegele's Rule: EDD = LMP + 1 year - 3 months + 7 days
  • Average Pregnancy: 40 weeks (280 days) from LMP
  • Gestational Age: Time elapsed since first day of LMP
  • Trimesters: 1st (0-12 weeks), 2nd (13-27 weeks), 3rd (28-40 weeks)

Important Notes

  • Most babies are born between 37 and 42 weeks
  • Only 4-5% of babies are born on their exact due date
  • Ultrasound in first trimester is most accurate for dating
  • Consult your healthcare provider for personalized advice

Disclaimer: This calculator provides an estimate based on standard formulas. It is not a substitute for professional medical advice. Always consult with your obstetrician or midwife for accurate pregnancy dating and care.

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