Army Body Fat Calculator

AR 600-9 uses the Department of Defense circumference equations, which are the same Hodgdon & Beckett formulas as the Navy tape.

This page estimates percent fat; it does not apply age-by-sex maximums or issue a pass/fail.

How it works

The Army tape test converts height and circumferences to inches and applies: men 86.010 log₁₀(waist − neck) − 70.041 log₁₀(height) + 36.76; women 163.205 log₁₀(waist + hip − neck) − 97.684 log₁₀(height) − 78.387.

Official screening also has site-of-measurement rules and maximum allowed percentages by age and sex, which this browser tool does not adjudicate.

Formula

Male: 86.010 log₁₀(waist − neck) − 70.041 log₁₀(height) + 36.76
Female: 163.205 log₁₀(waist + hip − neck) − 97.684 log₁₀(height) − 78.387
(all lengths in inches; AR 600-9 / DoD)

Worked examples

Male tape example
70 in, neck 16 in, waist 34 in → about 15.4%

Useful notes

Not an official Army determination and not medical advice.

FAQ

Is this the official Army calculator?: No. It implements the published circumference equations. A unit uses its own trained measurers and current regulation tables.
How is this different from the body-fat page?: The equation is the same family. This page names AR 600-9 / DoD; the other names the Navy method.
Does a number here pass the tape test?: This page does not apply maximums or grant a pass. That is a command decision.

Related tools

See all Fitness tools.