How is Body Mass Index (BMI) calculated?

Body Mass Index (BMI) is calculated using the formula that involves weight in kilograms and height in meters squared. This formula provides a common metric used to assess whether an individual has a healthy body weight for a given height. By using kilograms for weight and meters for height, BMI calculations align with the metric system, which is widely used in scientific and medical contexts.

The formula is expressed as BMI = weight (kg) / (height (m) × height (m)). This approach allows for standardization and facilitates comparisons across populations and studies.

In contrast, the other methods provided in the choices either use units that do not conform to the standard BMI calculation or mix units incorrectly. The most notable differences lie in the use of non-metric measurements or inappropriate combinations of units, making them unsuitable for accurately calculating BMI. Understanding this calculation is essential for healthcare providers when evaluating a patient's health status and addressing issues related to obesity or underweight conditions.