BMI Calculator

Calculate your body-mass-index (BMI) with Standard and Metric values.

Height:
Weight:

About BMI:

Body-Mass-Index (BMI) is a unit of measurement designed to broadly categorize a person as being underweight, normal weight, overweight, or obese based on tissue mass.

In accordance with data issued by the World Health Organization (WHO), the health of one's weight for their age is based on the following categorical chart:
Category BMI range - kg/m2
Severe Thinness < 16
Moderate Thinness 16 - 17
Mild Thinness 17 - 18.5
Normal 18.5 - 25
Overweight 25 - 30
Obese Class I 30 - 35
Obese Class II 35 - 40
Obese Class III > 40


Formula (US / Standard):

[weight (lb.) / height (in.) / height (in.)] * 703

or

weight (lb) / [height (in)]2 * 703


Formula (Metric):

[weight (kg) / height (cm) / height (cm)] * 10,000

or

weight (kg) / [height (m)]2 * 10000


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