YMed Atlas
Clinical reference
Clinical reference
Explore validated-style scores and utilities commonly used in Obstetrics & Gynecology. Follow links for full references, limitations, and the interactive calculator.
Search all tools (filters) →Completed gestational age as of a reference date from EDD by Naegele (LMP + 280 days) and/or clinical EDD. Shows dating discrepancy and GA difference. Inspired by Ped(z) gestational age; not affiliated with pedz.de.
Pregnancy · Updated 4/19/2026