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BMI Calculators

Compensation for Frame Size

I found many BMI calculators on the intertnet, but little of them compensates for your frame size. I therefore written my own BMI calculator. You can find it here: www.realbanter.com/Tools/BMI. The regular calculation are excellent for identifying obesity and body fat in large populations, but they are far less reliable for determining fatness in individuals.

Category: Banting
Author: Guss Davey
Tags: bmicalculator

The BMI is an attempt to quantify the amount of tissue mass (muscle, fat, and bone) in an individual, and then categorize that person as underweight, normal weight, overweight, or obese based on that value.

The regular calculation are excellent for identifying obesity and body fat in large populations, but they are far less reliable for determining fatness in individuals. However, many taller people are not just "scaled up" short people but tend to have narrower frames in proportion to their height. In an attempt to make this calculation more accurate, I have include frame size as an additional component. It will shift the BMI category 10% up for heavy frame or 10% down for light frame individuals.

You can find it here: www.realbanter.com/tools/bmi

I'm not a doctor, neither a dietitian. This is just a better BMI and body fat calculator that at the same time compensation for your frame size. Please see these two wiki articles: /wiki/Body_mass_index and wiki/Classification_of_obesity#Body_fat_percentage.The formulas used are:

  1. BMI Formula
  2. BFP Formula
    (gender: 1 for males and 0 for females)
  3. I then adjust the BMI Classification Table and BFP 10% up or down based on either a small or large skeleton frame.
  4. This calculator is not for children (2 - 20 years old) as the calculation is slightly different for them.
  5. If you do weights and have more muscle than average, this calculator is not for you (rather do your skin pinch test).