Body mass index: 9 st, 11 lb 5 ft, 5 in
The BMI test below will quickly show if your weight is perfect, severely underweight or obese.
Body Mass Index Prime is method of using the results of the BMI calculations to quickly and easily rank a person into a category. Eg:
 BMI Prime < 0.74 = Underweight. BMI Prime > 0.74 and < 1.00 = Optimal weight
 BMI Prime > 1 = Overweight
Body Mass Index Formula
You can use the following formula to calculate your BMI:

BMI = weight(kilograms) / height^{2} (metres^{2}) (Metric Units)
BMI = 703 . weight(pounds) / height^{2} (inches^{2}) (Imperial Units)