Obstetrics
Gestational Age & Pregnancy Milestones
Calculates pregnancy trimester, days to delivery, and clinical milestones.
Enlarge
Parameters
Gestational Age & Pregnancy Milestones Result
--
Formula
Total Days = (Weeks × 7) + Days. 40 Weeks = 280 Days (standard human gestation).Clinical Pearls
Accurate gestational age dating is critical for guiding prenatal diagnostic testing, assessing fetal growth, timing vaccinations, and determining the appropriate timing for delivery.
Limitations
If ultrasound dating differs significantly from LMP dating (e.g. > 7 days in the 1st trimester), the ultrasound date should be used as the definitive EDD.