Rx Med Calculator

**RxMedCalc OB Wheel — A Complete Digital Pregnancy Wheel for Clinicians**

The RxMedCalc OB Wheel is a free, clinical-focused digital alternative to the traditional obstetric wheel.

Calculate **estimated due date (EDD), gestational age, and pregnancy milestones** from LMP, ultrasound dating, IVF/embryo transfer, or a specific calendar date. The calculator also includes reverse EDD → LMP dating for situations where only the due date is available.

Beyond basic pregnancy dating, the tool provides quick access to:

• EDD and gestational age by LMP • Gestational age and EDD from ultrasound dating • IVF/ART pregnancy dating and milestones • Gestational age on any specific date • Reverse EDD → LMP calculation • Week-by-week pregnancy milestones • CRL, BPD, HC, AC and FL reference values • Approximate fetal weight by gestational age • Antenatal test and screening schedule • Trimester-wise pregnancy precautions • β-hCG reference ranges

Designed for **doctors, obstetricians, residents, midwives, medical students, and healthcare professionals**, RxMedCalc brings the information traditionally found on both sides of a physical OB wheel into one fast, accessible web tool.

**Free. No login required. Fast and easy to use.**

🔗 https://rxmedcalc.com/medical-calculators/obs-calc

*For clinical decision support only. Always interpret calculator results alongside the patient's clinical findings and current guidelines.*