The term "Body Mass Index" describes a simple method of representing the amount of body fat an individual carries. It was originally developed by a Belgian researcher, Adolphe Quetelet around 1840. It was meant to compare individuals in large populations. It was not intended to be applied in a "

*guilt-inducing*" way to label someone as overweight.

Here's a table so you can look up your BMI for yourself. Click on the chart to see it in a larger size, then click the back arrow to return to this page:

Is the BMI calculation rocket science? No, it's not rocket science, you can estimate your body mass index (as shown on the charts) with elementary arithmetic as taught in Excel Math.

First, measure your weight and height, then proceed to the calculations.

**CALCULATIONS**

We'll do this in both standard and metric units. First the standard US units:

Weight

**185 pounds**

Find your height in inches

Height

**69 inches**

Now multiply weight by 703 x 185 = 130,055

Now multiply height by itself (height squared) 69 x 69 = 4761

Divide weight by the height squared 130,055 ÷ 4761 =

**BMI 27.3**

To do the same calculations in metric units, start with kilograms (or divide pounds by 2.2):

Weight

**84.1 kg**

Then find your height in meters (or multiply inches x .0254)

Height

**1.753 m**

Now multiply height by itself (height squared) 1.75 x 1.75 = 3.073

Now divide weight by the height squared 84.1 ÷ 3.1 =

**BMI 27.1**

**CONCLUSIONS**

Now do we know our true body fat percentage? NO, we have a guesstimate. Finding real body fat IS rocket science.

Body mass composition is more accurately calculated using

**- in a laboratory with measurements taken with accuracy of ±.05 cm; using with skin-fold calipers and pinching skin in various specified places, calculation of total body volume by immersing you in a water tank; and tossing bones from a newt into smoldering lotus leaves (optional).**

*hydrostatic density testing*We'll talk about this more tomorrow.

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