Calculate your Body Mass Index by simply entering in your height in centimetres and weight in kilograms. The Body Mass Index is an indirect measure of body composition, and therefore people who should not use the Body Mass Index are anyone under 18, pregnant or nursing women, frail and sedentary elderly people, competitive athletes, body builders or people who are chronically ill. If you belong to one of these categories, you should consult your doctor about any concerns over your weight.

Please remember, this tool should only be used as a guide.

Enter your height and weight below and click "Calculate" to get your BMI.

kg and cm lbs and inches
   


  Your BMI

Interpreting Results

BMI What this BMI means
Less than 19 UNDERWEIGHT
You are under optimum weight for your height. You could afford to gain a little weight.
20 - 25 ACCEPTABLE
You have a healthy weight for your height.
26 - 30 OVERWEIGHT
You are over optimum weight for your height. You may be facing health problems, so losing some weight would be a good idea.
31 + OBESE
You are over optimum weight for your height. You may be facing health risks, so see your doctor to help you achieve a healthier weight.