The NICHD Fetal Growth Studies Unified calculator is designed to estimate fetal growth percentiles for a singleton (one) fetus between 15 0/7 to 40 6/7 weeks of gestation. The unified calculator does not take into account maternal race and ethnicity.
Because of a lapse in government funding, the information on this website may not be up to date, transactions submitted via the website may not be processed, and the agency may not be able to respond to inquiries until appropriations are enacted.
The NIH Clinical Center (the research hospital of NIH) is open. For more details about its operating status, please visit cc.nih.gov.
Updates regarding government operating status and resumption of normal operations can be found at OPM.gov.
BACK TO TOP