How is Body Mass Index (BMI) calculated?

Body Mass Index (BMI) is a widely used measurement that assesses body weight in relation to height. The calculation of BMI is done by taking a person's weight in kilograms and dividing it by their height in meters squared. This formula provides a number that helps categorize individuals as underweight, normal weight, overweight, or obese based on their body composition.

Using this method is beneficial because it offers a simple and effective way to evaluate whether an individual has a healthy body weight for their height, which can be an important factor in health assessments. The metric system is utilized in this calculation, which is standardized and allows for consistent assessments across diverse populations.

In contrast, other options provided use different measurements that do not adhere to the standard BMI calculation. For example, using weight in pounds divided by height in inches squared would not yield the same standardized result and lacks the universality of the metric system approach. Similarly, weight in stones or height in feet does not align with the standard measurement for calculating BMI. Therefore, the option that correctly represents the calculation of BMI is the one that uses weight in kilograms and height in meters squared.