Now that I have reached 300 lbs. at 5 '11", my scale tells me my body weight is made up of 39% fat with a BMI of 41.2. According to the book that came with my scale, a BMI of 30+ is obese and 35+ super obese. I have heard a BMI of 40+ described as morbidly obese but I hate that term. I enjoy my life as a fat guy and plan on it continuing. Super obese is just fine with me.