About This Launch
A free online obstetric calculator for dating pregnancy by LMP, ultrasound scan, IVF transfer or a known due date. It also includes a week-by-week milestone table, fetal biometry reference values and antenatal screening schedules. No login needed; for reference by healthcare professionals, not a substitute for clinical judgment.
Why I Built This
OB Wheel puts the common pregnancy dating methods in one quick calculator for clinicians and expectant parents.
Launch Details
CategoryHealth
StageLive
ListedNovember 7, 2026