Measure Your Body Composition at Home

Calculate at home, with just a soft tape measure and scientific calculator or online calculation links (below).  Just be aware that these results will not be 100% accurate, as measurements can vary.  Best to do it a few times for an average result.

FOR WOMEN

Measurements (round any fractions to the nearest ½”)

N = Measurement around neck just below larynx protrusion. 

W = Measurement around waist at thinnest part between bottom ribs and bellybutton.  Breathe normally and measure on an exhale.  Do not pull tight.

H = Measurement around hips, running tape over widest part of buttocks and keeping it parallel to floor.  Do not wear any compressing fabric while taking measurements!!!

T = Measurement of height in bare feet with chin level to floor and gaze straight ahead. (T=tall)

1)   Add W+H.  Subtract N.  This value will go in the first parenthesis of the equation.

2)   Calculate, using a scientific calculator.  (Don’t forget to put the parentheses around the values following the logs.)  Do not use spaces, as I have done just for clarity.

163.205 log(W + H – N) – 97.684 log(T) – 78.387 = Female Body Fat %

FOR MEN

Measurements (round any fractions to the nearest ½”)

N = Measurement around neck just below larynx protrusion. 

W = Measurement around bellybutton.  Breathe normally and measure on an exhale.  Do not pull tight.

T = Measurement of height in bare feet with chin level to floor and gaze straight ahead. (T=tall)

1)   Subtract W – N.  This value will go in the first parenthesis of the equation.

2)   Calculate, using a scientific calculator.  (Don’t forget to put the parentheses around the values following the logs.)  Do not use spaces, as I have done just for clarity.

86.010 log(W – N) – 70.041 log(T) + 36.76 = Male Body Fat %

Scientific Calculator

Scientific Calculator

Automated Body Fat Calculator

If you don’t like doing your own math, use this automated calculator.

US Navy Calculator – Body Fat Calculator – BizCalcs.com

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