Medical Calculator Wheels

Our medical calculator wheels make patient calculations a breeze. Checking on your patients progress or development has never been easier. 

Pregnancy Wheels

Guide patients through the myriad of pregnancy dates with this handy pocket tool. Ideal for any nurse, midwife, student, resident or clinical staff to help predict the next nine months of pregnancy, including the approximate date of delivery, prenatal genetic risk assessment screening, Crown Rump Length (CRL), and Biparietal Diameter (BPD). Each wheel is covered in heavy lamination to protect it from daily use and 3 different versions are available to choose from (Basic, Standard, Metric). 

BMI calculators

Calculate the body mass index of patients with our BMI wheels that fit in your pocket. Pediatric, children, teens and adult BMI wheels are available to have all your patients covered. No more guessing the BMI; measure height and weight to find the category that patients fall into.   


The neonatal wheels are practical guides, algorithms, and screening tools to manage different neonatal conditions or diseases. Choose from our selection of wheels on hypoglycemia, cyanotic congenital heart disease, chorioamnionitis, hyperbilirubinemia, or pulse oximetry wheel provides real-time diagnosis and treatment options for the various Neonatal medical conditions and disease. Each wheel is hole punched, riveted and supplied with a small attachment cord to place where you need them most.

This wheel provides a practical guide and algorithm for screening and subsequent management of neonatal hypoglycemia with a goal target glucose screen ≥45 mg/dL prior to routine feedings. Initial screen for hypoglycemia is 30 minutes after the first feeding. For infants who are 4-24 hours old, feeding is typically every 2-3 hours with glucose.

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Chorioamnionitis Wheel

This pocket wheel is used to help diagnose patients with Intrauterine Inflammation or Infection or both, abbreviated as “Triple I”. Using the defined characteristics of patients, you’ll be able to pull this pocket wheel out and walk through the 6 colored circles to help you define and diagnose each condition with treatment recommendations. An added utility chord helps keep all your wheels and other reference material together in one convenient place! See our other reference wheels here!