BMI Calculator - find your body mass index

The BMI calculation uses your weight in kilograms or pounds, divided by the square of your heigh in centimetres or inches. But don't worry about the maths, what you're interested in is the figure that pops up when you put your vital statistics into the this neat little gizmo below.

BMI Calculator

What does the BMI scale mean?

Got your result? This chart shows what it means. These figures come from the World Health Organisation.

• Under 18.4 - you are underweight for your height.
• 18.5 to 24.9 - well done, you are the ideal weight for your height.
• 25 to 29.9 - oops, you're tipping the scale too much, and are overweight for your height.
• 30 to 39.9 - this reading means that you are classed as obese.
• over 40 - you are in the danger zone of obesity.

BMI over 25?

A body mass index of 25+ is a wake-up call. Make some changes to your diet, and start eating healthily to lose weight.

If your BMI is 30+ you are at greater risk of some cancers, heart disease and diabetes type 2. See your doctor for weight-loss advice, make changes to your diet and check out the groundrules for eating healthy and exercise.

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