Body Mass Index (BMI)

BMI is a value derived from the mass (weight) and height of a person. The BMI is defined as the body mass divided by the square of the body height, and is expressed in units of kilograms per meters squared.

The formula attempts to determine if an individual is underweight, average weight, or overweight, but is not an accurate tool to use for an athlete as it does not take body fat or muscle into consideration.