First chose the method to calculate your dates

First day of your last menstrual period (Natural conception, fertility drugs or IUI)
Date of your egg retrieval (Fresh IVF)
Date of day 3 embryo transfer (Fresh or frozen IVF)
Date of day 5 blastocyst transfer (Fresh or frozen IVF)

Next, chose the date ...

Your due date (EDC):

Your gesatational age:

Please note that your due date is only an estimate of when your child will be born. Most babies are not born on their due dates, and your doctor may change the due date based on ultrasounds and other data.