BMI Calculator

What is BMI?

Body Mass Index is a simple screening measure of body fat based on height and weight: BMI = weight(kg) / height(m)². It applies to most adults aged 20 and over.

BMI is a useful population-level indicator but has limits: it does not distinguish muscle from fat, so very muscular people may read as "overweight", and it isn't suitable for children, pregnant people or the elderly. Treat it as a starting point, not a diagnosis.

This is not medical advice. Talk to a healthcare provider about your individual health.