A first-trimester ultrasound is the most accurate way to date a pregnancy. If your scan report gives a gestational age — for example '12 weeks 3 days' — enter that along with the date of the scan, and this calculator projects your estimated due date and the rest of your pregnancy timeline. Early dating scans (using crown-rump length before 14 weeks) are the gold standard doctors use to set or revise the EDD.
Pick the date you have
Enter your date, then click Calculate
A doctor can discuss your symptoms and help you decide what to do next.
