BMI Calculator

Body mass index is a widely used screening measure that relates weight to height. Enter your height and weight and the calculator returns your BMI along with the standard World Health Organization category — underweight, normal weight, overweight, or obesity.

BMI is a population-level screening tool, not a diagnosis. It doesn't distinguish muscle from fat, account for bone density, or reflect where weight is carried, so athletes and older adults in particular can get misleading readings. Treat the result as one data point among many, alongside waist measurements, activity levels, and how you actually feel.

If your result surprises you or you're considering significant lifestyle changes, discuss it with a doctor or qualified health professional who can interpret it in the context of your full health picture. This tool provides general information only and is not medical advice.