What's More Get your BMI! Using your paper again, compute your BMI using the formula below. Example: Weight: 130 pounds (convert into kilos) x 1kg / 2.2 pounds = 59 kg Height: 5 feet 3 inches (convert to meters) x .0254 meters | inch = 1.6 m BMI = = wt in kg 59 kg = 23 kg/m2 ht in m2 (1.6 m)2 BMI Categories: Underweight Normal weight Overweight Obesity = <18.5 = 18.5-24.9 = 25-29.9 BMI of 30 or greater​