Your body-mass index ("BMI") is a measure of your height/weight ratio and there is a correlation between this ratio and your general health.
BMI is calculated by taking your weight in kilograms and dividing it by the square of your height in meters. For example, if your height is 1.8 meters, the divisor of the calculation will be (1.8 * 1.8) = 3.24. If your weight is 70 kilograms, then your BMI is 21.6 (70 / 3.24).
