Obstetric and Gynecologic - Estimated Date of Delivery (EDD) Pregnancy Calculator

Estimated Date of Delivery (EDD) Pregnancy Calculator

Input:
Current Date   
Last Menstrual Period   
Ultrasound Date   
Gestational Age by US
Results:
Current Gestational Age by LMP
EDD by LMP
Current Gestational Age by US
EDD by US
 
  • This calculator gives you two options for estimating EDD (estimated date of delivery.)
  • Input any parameters to compare the two date calculations. The Current Date is set to your local workstation date.
  • Gestational Age by LMP is calculated from the first day of the last menstrual period.
  • EDD by LMP is calculated by adding 280 days (40 weeks) to the first day of the last menstrual period.
  • Gestational Age by US is measured by ultrasound (US) on the Ultrasound Date.
  • EDD by US is the estimated date of delivery based on the Gestational Age by US and the Ultrasound Date.
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