Calculate your Body Mass Index instantly. Find out if you are underweight, normal weight, overweight, or obese based on your height and weight.
BMI (Body Mass Index) is a measure of body fat based on height and weight. It is used to screen for weight categories that may lead to health problems. BMI does not directly measure body fat but is a useful screening tool.
Metric: BMI = weight(kg) ÷ height(m)². Imperial: BMI = 703 × weight(lb) ÷ height(in)².
BMI does not account for muscle mass, bone density, or fat distribution. Athletes may have a high BMI due to muscle. Always consult a doctor for a complete health assessment.