Body Mass Index (BMI)

Quickly measure and calculate your BMI

Body Mass Index (BMI) is a standardized formula to determine the ratio between height and weight. BMI is a fairly reliable indicator of body fat for most adults, though not for the elderly or those with a lot of muscle tone. It is best used to quickly categorize someone as underweight, normal weight, overweight, or obese.

BMI Protocol

Equipment

Scale

Procedure

Use a U.S. standard scale and input weight in pounds, and height in feet and inches.

BMI Calculation

ft
in
lbs

Calculation Result

DATE
Weight (lbs)
BMI (kg/m2)
BMI Classification

BMI Comparison Chart

CLASSIFICATIONFROM (kg/m2)TO (kg/m2)
Under Weight0.018.4
Normal Weight18.524.9
Over Weight25.029.9
Obesity Class I30.034.9
Obesity Class II35.039.9
Obesity Class III40.0>40.0

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