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Calculate Body Mass Index (BMI)

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Body Mass Index is a quick way to roughly approximate your body fat using only your height and weight. This works for adult men and women. BMI is an imprecise measurement because it cannot take into account how muscular a person is. It does allow a person to compare their BMI to the general or average population, and the calculation is simple. The overall correlation between body fat levels and BMI is fairly strong, though it varies by sex, race, and age.
A few variations include:

  • At the same BMI, women tend to have more body fat than men.
  • At the same BMI, older people, on average, tend to have more body fat than younger adults.
  • Highly trained athletes may have a high BMI because of increased muscularity rather than increased body levels.

More accurate methods of measuring body fat include skinfold caliper tests, underwater weighing, and dual energy x-ray absorptiometry (DXA).

The following table shows the standard weight status categories for adults:

BMI

Weight Status
Below 18.5 Underweight
18.5 – 24.9 Normal
25.0 – 29.9 Overweight
30.0 and Above Obese

Calculate your BMI:
Height Weight
feet inches pounds

The following are suggestions for equipment you might use for body fat analysis:
FitDaily.Com does not specifically endorse these or any products