Medically reviewed by Suzanne Fisher, RD Key Takeaways Body mass index (BMI) is a calculation used to estimate your body fat.

BMI (Body Mass Index) is a simple numerical value derived from a person's weight and height. It is calculated by dividing a person's weight in kilograms by the square of their height in meters. This ...

Body Mass Index is a measure of body weight to the square of your height. A higher BMI indicates higher and unhealthy body fat, which may lead to various health problems. To determine your BMI, a ...

When it comes to measuring your health status or fitness level, there’s no shortage of metrics out there, which makes figuring out which ones actually matter confusing. One number you might want to ...