HOW IS OBESITY MEASURED?

Body fat stores can be estimated using Quetelet's Body Mass Index (BMI), calculated by dividing your weight in kilograms by your height in metres squared:
BMI=Weight (Kg)/ Height (M) x Height (M)

This gives a figure which is interpreted as follows:
< 20 Underweight

20-25 Healthy weight

25-30 Overweight

30-40 Obese

> 40 Morbidly Obese

If your BMI is greater than 30 kg/M2 you are classed as obese