Calculate your Body Mass Index (BMI) to find out whether you are a healthy weight for your height. This calculator uses the standard BMI formula and shows your BMI score, weight category and healthy weight range.
BMI is calculated by dividing your weight in kilograms by your height in metres squared: BMI = kg/m². For example, someone who weighs 75kg and is 1.75m tall has a BMI of 75 ÷ (1.75 × 1.75) = 24.5, which falls in the healthy weight range.
BMI is a useful screening tool but has limitations. It does not account for muscle mass, bone density, body fat distribution or ethnic differences. Athletes and very muscular people may have a high BMI but low body fat. Older adults may have a healthy BMI but still carry excess body fat.
BMI should be used as one of several indicators of health rather than a definitive measure. Always consult a healthcare professional for personalised advice about your weight and health.