ZovaTool

Army Body Fat Calculator

Body Fat %
14.0%
Fat Mass
10.5 kg
23.2 lb
Lean Mass
64.5 kg
142.2 lb
Category
Fitness
Army Max for age 28 (male):26%
Status:PASS
Show formula steps
BF% = 86.010 × log₁₀(waist − neck) − 70.041 × log₁₀(height) + 36.76
Inputs (in): waist=32.3, neck=15.0, height=70.1
BF% = 14.03%

How to use the Army Body Fat Calculator

  1. Pick method: US Army (AR 600-9), US Navy, or USMC.
  2. Choose sex and enter age.
  3. Switch metric/imperial and enter height + weight.
  4. Measure neck just below larynx, waist at navel (men) or narrowest (women), and hip at widest (women).
  5. Read body fat %, fat/lean mass and pass/fail against the age-based Army max.
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The Army tape test, explained

The US Army's circumference ("tape") method estimates body fat from a log-ratio of neck and waist (plus hip for women) against height. It correlates within ~3–4% of DEXA on average — close enough for a field standard, not for clinical decisions.

AR 600-9 sets the maximum allowable body fat by age and sex. Exceeding it triggers the Army Body Composition Program. Our calculator shows the limit, your current %, and whether you pass.

The US Navy and USMC use the same underlying circumference formula. Marines must also pass a separate height/weight screen first.