How to use
Pick metric or imperial, enter height and weight, then calculate. Your BMI, WHO category and the healthy weight range for your height appear instantly.
Note
BMI does not distinguish muscle from fat and is not advised for children, pregnant women or athletes as a sole health measure. Consult a professional for medical advice.
Frequently asked questions
Is BMI accurate for muscular people?
No, muscle weighs more than fat, so athletes often read high. Treat it as one signal.
Where is my category shown?
Below your result, colour-coded against WHO bands, plus a marker on the scale.
Children supported?
Adult BMI only; children need age-specific percentile charts.