Summary
Usage BMI may be a simple and cost-effective measure of body fat. BMI evaluates the relationship of body mass to height, but it may not be accurate for everyone. BMI does not differentiate between the ratio of body fat to muscle present in body mass nor factor gender, developmental or ethnic considerations. Examples of BMI Limitations:May be an inappropriate measure for muscular or fit body types. Body fat measurements may be more accurate.Ethnic variations in height and stature.. Summary BMI offers a more accurate understanding of body composition than weight alone. Additionally, BSA is used in specific therapeutic use cases, such as the treatment of burns. RulesBody mass index (kg/m²) = weight(kg) / (height(m))²Body surface area (m²) = (Height (cm) x Weight (kg) / 3600)^0.5Uses the Mosteller formula BMI (kg/m²)Weight<18.5Underweight18.5-24.9Normal Weight25.0-29.9Overweight30.0-34.9Obese Class 135.0-39.9Obese Class 2≥40.0Obese Class 3.