Body Mass Index. (BMI)

Your BMI (Body Mass Index) is a way of working out how overweight you actually are and can give you an indication of how much weight you need to lose to get to the healthy weight category. It is measure of body fat based on height and weight.

It should be used as a general guide and it doesn’t take into account the difference between fat and muscle so someone with a higher muscle mass like an athlete could potentially fall into the overweight category. So a normal BMI isn’t the be all and end all but it is a good guide to aim for:

BMI CHART (Use the coloured charts from why lose weight section)

  • Underweight <19
  • Ideal BMI 19-25
  • Overweight 25-30
  • Obese >30
  • Severely Obese >35
  • Morbidly Obese >40

The equation used to work out BMI is:

Weight in Kg

Divided by

Height in metres squared

Or you can use our handy BMI calculator here to work out your BMI

BMI Calculator
Imperial    Metric
ft in
Powered by Easy BMI Calculator


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