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BMI CALCULATORE

Body mass index (BMI) is a measure of body fat based on height and weight that applies to adult men and women.

  • Enter your weight and height using standard or metric measures.
  • Select "Compute BMI" and your BMI will appear below.

    Assessing Your Weight and Health Risk

    Assessment of weight and health risk involves using three key measures:

  • Body mass index (BMI)
  • Waist circumference
  • Risk factors for diseases and conditions associated with obesity

Body Mass Index (BMI)

BMI is a useful measure of overweight and obesity. It is calculated from your height and weight. BMI is an estimate of body fat and a good gauge of your risk for diseases that can occur with more body fat. The higher your BMI, the higher your risk for certain diseases such as heart disease, high blood pressure, type 2 diabetes, gallstones, breathing problems, and certain cancers.

Although BMI can be used for most men and women, it does have some limits:

  • It may overestimate body fat in athletes and others who have a muscular build.
  • It may underestimate body fat in older persons and others who have lost muscle.

Use the BMI Calculator or BMI Tables to estimate your body fat. The BMI score means the following:

  BMI
Underweight
Below 18.5
Normal
18.5–24.9
Overweight
25.0–29.9
Obesity
30.0 and Above


The BMI calculator is also available in a mobile application. This tool provides results right on your iphone along with links to healthy weight resources on the NHLBI Web site.

Waist Circumference

Measuring waist circumference helps screen for possible health risks that come with overweight and obesity. If most of your fat is around your waist rather than at your hips, you’re at a higher risk for heart disease and type 2 diabetes. This risk goes up with a waist size that is greater than 35 inches for women or greater than 40 inches for men. To correctly measure your waist, stand and place a tape measure around your middle, just above your hipbones. Measure your waist just after you breathe out.

The table Risks of Obesity-Associated Diseases by BMI and Waist Circumference provides you with an idea of whether your BMI combined with your waist circumference increases your risk for developing obesity-associated diseases or conditions.



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