The OB wheel that respects your time — and your privacy. One screen. Every date. No account, no subscription, no data collected. Includes ACOG-based ultrasound redating, IVF transfer dating and Bishop score — features the classic wheels never had.
WHEEL — one screen with every date: LMP, conception, gestational age today, ultrasound and due date. Tap any element to edit; everything recalculates instantly, in both directions.
ULTRASOUND REDATING (ACOG) — enter the exam date and the measured gestational age; Partus applies the ACOG redating thresholds and tells you plainly which dating applies and why.
IVF DATING — day-3 or day-5 transfer date gives the EDD with no LMP at all. The wheel keeps a visible note that dates came from IVF.
WEEKS — the reverse calculator: "the patient was 12 w 0 d on…" reconstructs LMP and EDD. Plus trimester ends and week-by-week date ranges with reference biometry.
BISHOP SCORE — five parameters, instant score and interpretation.
PRIVATE BY DESIGN — works fully offline and collects nothing. No account, no subscription, no ads. One price, everything included.
Partus is a reference calculator for healthcare professionals. It does not provide medical advice or diagnosis.
