How is BMI calculated?

The Body Mass Index (BMI) is calculated using the formula that takes a person's weight in kilograms and divides it by their height in meters squared. This formula is designed to provide a simple numerical measure that can be used to assess whether an individual has a healthy body weight in relation to their height.

Using weight in kilograms ensures that the metric system is properly utilized, which is crucial for maintaining consistency and accuracy in the calculations. Additionally, squaring the height in meters accounts for the dimensionality of the relationship between weight and height. This helps in normalizing the BMI value, allowing for meaningful comparisons across different populations and individuals of varying heights.

In contrast, other options either use incorrect formulas or units that do not align with the standard calculation for BMI, which is why they do not provide the correct method for calculating BMI.