IVF Due Date Calculator

An IVF due date is a plain date offset rather than an estimate built from a last menstrual period. Enter the embryo transfer date and the age of the embryo on the day it was transferred, and the tool counts forward to the 266 day mark that a full term pregnancy is measured from. A day 5 blastocyst transfer adds 261 days and a day 3 transfer adds 263. Your clinic's own dating, confirmed by ultrasound, always takes precedence over this arithmetic.