Enter the skinfold measurements (mm) of the biceps, triceps, subscapular, and iliac into the calculator to determine the body density.

## Body Density Formula

The following formula is used to calculate a body density.

D= 1.1422 – [.0544*log (skinfold sum (mm) ) ]

• Where D is the body density (g/m^3)
• skinfold sum = skinfold of biceps + triceps + subscapular + iliac

This equation is used for males age 30-39. The following table displays the formula how males and females of different ages. In the formula below, log(s)= log(skinfold sum of the 4 measurements)

## Body Density Definition

What is a body density? A body density is defined as the total mass per unit volume of an individual human. It’s often estimated using a formula like the one above, which takes skinfold measurements throughout the body.

## Example Problem

How to calculate body density?

1. First, take the measurements of the skinfold in each of the 4 areas.

For this example, we find measurements as follows: 2mm, 3mm, 5mm, 2mm, for the biceps, triceps, subscapular, and iliac respectively.

2. Next, sum the skinfold measurements.

Adding the measurements together we get a sum of 12mm.

3. Finally, calculate the body density.

Calculate the body density using the formula above. D = 1.1422 – ( .0544 * log ( 12) ) = 1.083 g/cm^3.