BMI = Kg / (m)2 For those used to American measures: Divide your height (in inches) by 39.36 to determine your height in meters. Divide your weight (in pounds) by 2.2 to find determine your weight in kilograms. Square your height (in meters). Divide your weight (in kilograms) by your squared height. The final result is your BMI.

The American Institute for Cancer Research considers a BMI between 18.5 and 25 to be an ideal target for a healthy individual (though many sources consider a BMI of less than 20 to be underweight). If a BMI is 25 or above, the person is considered overweight. above 30 is considered obese. Note that the BMI scale may improperly consider some people overweight or obese due to it's inability to distinguish between fat weight and muscle weight. its an inaccurate indicator of actual health.