Medically reviewed by Suzanne Fisher, RD Calculating your body mass index (BMI) involves using a simple formula with your ...

It is used to classify individuals into different categories: underweight, normal weight, overweight, or obese. The formula for BMI is as follows: BMI=weight (kg)/height (m)2 The BMI number can ...

Body mass index (BMI) can help you see if your weight is raising your risk for health problems. It uses a formula to compare how much you weigh with how tall you are. A BMI lower than 18.5 is ...