Free calculate estimated due date (EDD) from last menstrual period or conception date. This is an educational tool only - always consult a healthcare provider.
Pregnancy Information
Results
Enter information to calculate due date
About EDD
• EDD = LMP + 280 days (40 weeks)
• EDD = Conception + 266 days (38 weeks)
• Most babies born 37-42 weeks
• Ultrasound dating most accurate in first trimester