Calculating BMI BMI Categories: Underweight = <18.5 Normal weight = 18.5–24.9 Overweight = 25–29.9 Obesity = BMI of 30 or greater Interpreting Weight: A convenient way to interpret weight is to determine body mass index (BMI). BMI is calculated by dividing the weight in kilo-grams by the square of the height in meters. This calculation yields a value that can be interpreted without further reference to height. BMI = Weight in Pounds x 703 ______________________ 2 Height in Inches BMI Example: Mr. Jones weight: 200 lbs Mr. Jones height: 5’ 10’’ 200 x 703 = 140,600 __________ 70 inches (squared) 4,900 140,600/4,900 = 28.69 (28.7 BMI Overweight)