BMI made simple! This two-wheel Body Mass Index Calculator empowers adults to understand their body's composition. By combining height and weight, you can discover your unique body mass. With vinyl wheels guiding your journey, you'll gain insight into whether you're in the healthy range, encouraging you to strive for your best self. The top wheel features a 3 3/4" diameter, while the bottom wheel measures 4 1/2" in diameter. It is crafted from durable .020 white plastic for lasting use.