Body Mass Index
Body Mass Index Overview Calculator Results Waist Circumference
 

What is body mass index?

Determining how much you should weigh is not a simple matter of looking at an insurance height-weight chart, but includes considering the amount of bone, muscle, and fat in your body's composition. The amount of fat is the critical measurement.

A good indicator of how much fat you carry is the Body Mass Index (BMI). Although it is not a perfect measure, it gives a fairly accurate assessment of how much of your body is composed of fat.

 
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Use our online index to calculate your BMI:


Or use the formula below, provided by the Centers for Disease Control and Prevention (CDC):

• English formula BMI = weight in pounds ÷ (height in inches)2 x 703
• Metric formula BMI = weight in kilograms ÷ (height in meters)2

 
Body Mass Index
Body Mass Index
Body Mass Index Overview Calculator Results Waist Circumference
 

According to the National Heart, Lung, and Blood Institute (NHLBI), body mass index (BMI) is a measure of body fat based on height and weight that applies to both adult men and women.

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Body Mass Index
 
Body Mass Index
Body Mass Index Overview Calculator Results Waist Circumference

Your BMI is:

According to the National Heart, Lung, and Blood Institute (NHLBI), a body mass index (BMI) of less than 18.5 is considered underweight. A healthy BMI for adults is between 18.5 and 24.9. BMI ranges are based on what impact body weight has on disease risk and death.

When interpreting this score, keep in mind that BMI has some limits, including:

  • Your BMI score may overestimate body fat in athletes
    and those with a muscular build.
  • Your BMI score may underestimate body fat in older
    person or persons who have lost muscle mass.
  • BMI is not appropriate for pregnant or breastfeeding
    women.

Some government agencies and professional health organizations do not agree on the interpretation of results and the weight classifications listed above. Always consult your physician for additional information regarding your individual health risks and medical history, and to discuss the limitations of BMI.

Body Mass Index
Body Mass Index
Body Mass Index Overview Calculator Results Waist Circumference

Your BMI is:

According to the National Heart, Lung, and Blood Institute (NHLBI), a body mass index (BMI) of 18.5 to 24.9 is normal. BMI ranges are based on what impact body weight has on disease risk and death.

When interpreting this score, keep in mind that BMI has some limits, including:

  • Your BMI score may overestimate body fat in athletes
    and those with a muscular build.
  • Your BMI score may underestimate body fat in older
    person or persons who have lost muscle mass.
  • BMI is not appropriate for pregnant or breastfeeding
    women.

Some government agencies and professional health organizations do not agree on the interpretation of results and the weight classifications listed above. Always consult your physician for additional information regarding your individual health risks and medical history, and to discuss the limitations of BMI.

Body Mass Index
Body Mass Index
Body Mass Index Overview Calculator Results Waist Circumference

Your BMI is:

According to the National Heart, Lung, and Blood Institute (NHLBI), a body mass index (BMI) of 25 to 29.9 is considered overweight.
A healthy BMI for adults is between 18.5 and 24.9. BMI ranges are based on what impact body weight has on disease risk and death.

When interpreting this score, keep in mind that BMI has some limits, including:

  • Your BMI score may overestimate body fat in athletes
    and those with a muscular build.
  • Your BMI score may underestimate body fat in older
    person or persons who have lost muscle mass.
  • BMI is not appropriate for pregnant or breastfeeding
    women.

Some government agencies and professional health organizations do not agree on the interpretation of results and the weight classifications listed above. Always consult your physician for additional information regarding your individual health risks and medical history, and to discuss the limitations of BMI.

Body Mass Index
Body Mass Index
Body Mass Index Overview Calculator Results Waist Circumference

Your BMI is:

According to the National Heart, Lung, and Blood Institute (NHLBI), a body mass index (BMI) of 30 or greater is considered obese.
A healthy BMI for adults is between 18.5 and 24.9. BMI ranges are based on what impact body weight has on disease risk and death.

When interpreting this score, keep in mind that BMI has some limits, including:

  • Your BMI score may overestimate body fat in athletes
    and those with a muscular build.
  • Your BMI score may underestimate body fat in older
    person or persons who have lost muscle mass.
  • BMI is not appropriate for pregnant or breastfeeding
    women.

Some government agencies and professional health organizations do not agree on the interpretation of results and the weight classifications listed above. Always consult your physician for additional information regarding your individual health risks and medical history, and to discuss the limitations of BMI.

Body Mass Index
Body Mass Index
Body Mass Index Overview Calculator Results Waist Circumference

Waist Circumference

According to the National Heart, Lung, and Blood Institute
(NHLBI), guidelines, assessment of overweight involves three
key measures:

  • body mass index (BMI)
  • waist circumference
  • risk factors for obesity-related diseases and conditions,
    including:
    • high blood pressure
    • high blood cholesterol or other lipid disorders
    • stroke
    • heart disease
    • certain cancers
    • premature death

Abdominal fat is another predictor of your risk for heart and other diseases. To measure your waist circumference, place a measuring tape snugly around your waist. A waist circumference measurement of over 40 inches in men and over 35 inches in women increases your risk. Always consult your physician for more information regarding reducing your risk for disease.

Body Mass Index