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According to an online BMI Calculator:
Body Fat Formula For Women | |
---|---|
Factor 1 | (Total body weight x 0.732) + 8.987 |
Factor 2 | Wrist measurement (at fullest point) / 3.140 |
Factor 3 | Waist measurement (at naval) x 0.157 |
Factor 4 | Hip measurement (at fullest point) x 0.249 |
Factor 5 | Forearm measurement (at fullest point) x 0.434 |
Lean Body Mass | Factor 1 + Factor 2 - Factor 3 - Factor 4 + Factor 5 |
Body Fat Weight | Total bodyweight - Lean Body Mass |
Body Fat Percentage | (Body Fat Weight x 100) / total bodyweight |
Body Fat Formula For Men | |
Factor 1 | (Total body weight x 1.082) + 94.42 |
Factor 2 | Waist measurement x 4.15 |
Lean Body Mass | Factor 1 - Factor 2 |
Body Fat Weight | Total bodyweight - Lean Body Mass |
Body Fat Percentage |
(Body Fat Weight x 100) / total bodyweight |
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According to the CDC, BMI should be calculated in adults using the same formula irrespective of sex.
http://www.cdc.gov/healthyweight/assessing/bmi/adult_bmi/index.html
However, in general, BMIs are calculated differently between the sexes for children and teens.
Does that mean that the above BMI calculators are incorrect? Not necessarily. BMI is a very broad measurement, it can be estimated in a mirror with some measuring tape and a calculator, or in a weight loss clinic with half a million dollar equipment designed to send exotic signals through one's tissues. There's a ton of wiggle room in between.
For the most part, BMI is a rough estimate. While it does correspond with standards set for determining obesity, it does not necessarily correspond to fitness level.
Please talk to a certified fitness professional before applying any BMI results to your lifestyle.
For more information on BMIs check out this website: