How is Body Mass Index (BMI) calculated?

Body Mass Index (BMI) is a widely used tool to assess body weight relative to height, helping to categorize individuals as underweight, normal weight, overweight, or obese. The correct calculation of BMI is achieved using the formula that defines BMI as weight in kilograms divided by the square of height in meters, which is represented as Kg/m².

This means that to calculate BMI, you first determine the height in meters and then square that value. Next, you take the weight in kilograms and divide it by the squared height. This metric is beneficial because it provides a simple numerical value that can indicate whether a person's weight may pose health risks.

Other options do not correctly represent the BMI calculation. For instance, simply using weight divided by height does not account for the necessary squaring of height, leading to an inaccurate representation of body composition. Similarly, stating the sum of weight and height do not relate to BMI and does not provide insight into body composition. Thus, the correct formula provides the accurate framework needed to assess an individual's health in relation to their height and weight.