How to Use the BMI Calculator (Metric and Imperial)
Choose metric (cm/kg) or imperial (ft, in/lb) units, enter your height and weight, and the calculator instantly shows your BMI along with which of the four standard categories it falls into on a visual scale.
The BMI Calculator is built for a fast, unit-flexible result — here's what to enter and how to read the visual scale it produces.
Choosing units and entering values
The unit toggle at the top switches the entire form between metric (centimeters and kilograms) and imperial (feet/inches and pounds) — pick whichever matches how you naturally think about your height and weight, since the underlying calculation handles the conversion internally either way.
Reading the result and the scale
The result shows your BMI as a single number alongside a labeled category (underweight, healthy weight, overweight, obese). The visual scale beneath it places a marker at your exact BMI along a colored bar spanning the full range, making it easy to see at a glance not just which category you're in, but how close you are to a neighboring one.