What does BMI stand for and how is it calculated?

What does BMI stand for and how is it calculated?

• A. Basal Metabolic Indicator; calculated from age and sex.
• B. Body Mass Index; calculated as weight in pounds divided by height in inches squared.
• C. Body Mass Index; calculated as weight in kilograms divided by height in meters squared.
• D. Body Muscle Index; derived from lean body mass.

Answer: (C)

BMI is a simple screening tool that uses height and weight to estimate body fat and assess weight status. It stands for Body Mass Index. The standard calculation uses metric units: weight in kilograms divided by height in meters squared, so BMI = weight(kg) / [height(m)]^2. In countries that use pounds and inches, the calculation can be done with a conversion factor: BMI = [weight(lbs) / (height(in))^2] × 703. This is why the option using kilograms and meters squared is correct. The other ideas aren’t accurate: one uses a misleading label, and the alternative formula with pounds and inches omits the necessary conversion factor, making it an approximation.

BMI is a simple screening tool that uses height and weight to estimate body fat and assess weight status. It stands for Body Mass Index. The standard calculation uses metric units: weight in kilograms divided by height in meters squared, so BMI = weight(kg) / [height(m)]^2. In countries that use pounds and inches, the calculation can be done with a conversion factor: BMI = [weight(lbs) / (height(in))^2] × 703. This is why the option using kilograms and meters squared is correct. The other ideas aren’t accurate: one uses a misleading label, and the alternative formula with pounds and inches omits the necessary conversion factor, making it an approximation.