Body Mass Index (BMI) – Count it Yourself
August 12th, 2008
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Body mass index (BMI) is a measure of body fat based on height and weight that applies to both adult men and women. Body mass index (BMI) may be accurately calculated using the formulas below.
| Category | BMI range – kg/m2 | BMI Prime | Mass of a 1.8 metres (5 ft 11 in) person with this BMI |
|---|---|---|---|
| Severely underweight | less than 16.5 | less than 0.60 | under 53.5 kilograms (8.42 st/118 lb) |
| Underweight | from 16.5 to 18.5 | from 0.6 to 0.74 | from 53.5 and 60 kilograms (8.42 and 9.45 st/118 and 132 lb) |
| Normal | from 18.5 to 25 | from 0.74 to 1.0 | from 60 and 81 kilograms (9.4 and 13 st/130 and 180 lb) |
| Overweight | from 25 to 30 | from 1.0 to 1.2 | from 81 and 97 kilograms (12.8 and 15.3 st/180 and 210 lb) |
| Obese Class I | from 30 to 35 | from 1.2 to 1.4 | from 97 and 113 kilograms (15.3 and 17.8 st/210 and 250 lb) |
| Obese Class II | from 35 to 40 | from 1.4 to 1.6 | from 113 and 130 kilograms (17.8 and 20.5 st/250 and 290 lb) |
| Obese Class III | above 40 | above 1.6 | above 130 kilograms (20 st/290 lb) |
