NIH Websites Are Changing

NIH is moving the launch of its new website to the fall to ensure the best possible experience for everyone who relies on our websites for health information, research, funding opportunities, and other resources.

Gestational Age

The NICHD Fetal Growth Studies gestational age calculator is designed to estimate gestational age for a singleton (one) fetus between 14 0/7 to 40 6/7 weeks of gestation.

Gestational Age Calculator R Code