NETA Personal Trainer Practice Exam

How do you calculate BMI using weight and height?

1. BMI = kg / in^2

2. BMI = lb / m^2

3. BMI = kg / m^2

4. BMI = lb / in^2

The correct answer is: BMI = kg / m^2

To calculate Body Mass Index (BMI), the formula used is weight in kilograms divided by height in meters squared, expressed as BMI = kg / m^2. This formula provides a standardized way to assess body weight relative to height, giving insight into whether an individual is underweight, normal weight, overweight, or obese. Using weight in kilograms rather than pounds is crucial for ensuring accuracy in calculations, as the metric system is universally recognized for BMI calculations in health and fitness contexts. Similarly, measuring height in meters aligns with this metric approach, allowing for consistent evaluations across different populations and studies. The other formulas presented either misrepresent the units or incorrectly apply the measurements, which would lead to erroneous BMI values. Therefore, the correct application of the formula using kilograms and meters is essential for accurately determining an individual's body mass index.