Body Mass Index with category, healthy weight range, and color-coded scale.
BMI is a rough estimate, not medical advice.
Choose Metric or Imperial, then enter your height and weight. BMI is computed as weight (kg) divided by height (m) squared. Your value is mapped to a category — underweight, normal, overweight, or obese class 1/2/3 — and shown on a colored scale. The healthy weight range for your height is also displayed.