your BMI can be calculated in both metric and imperial from here. I'm the low end of normal; 19.4. How is the rest of the MR community? Please note that these calculators don't account for all body types. Muscle weighs more than fat, so a person with lots of muscle bulk can come up with a high BMI. It's just a guide for the average person. According to the BMI, Ian Thorpe, gold-medalist Australian swimmer, is obese. edit: this calculator is pretty good as well.