Army Body Fat Calculator
Estimate body fat percentage using the official US Army tape test (AR 600-9 circumference method) and check it against maximum allowed standards by age and gender.
Frequently Asked Questions
How does the Army calculate body fat?
The Army uses the circumference ("tape") method from AR 600-9. For men: %BF = 86.010 × log10(waist − neck) − 70.041 × log10(height) + 36.76, measured in inches, with the waist taken at the navel. For women: %BF = 163.205 × log10(waist + hip − neck) − 97.684 × log10(height) − 78.387. Measurements are taken three times and averaged by trained personnel.
What are the Army maximum body fat standards?
Under AR 600-9, maximum allowed body fat for men is 20% (ages 17–20), 22% (21–27), 24% (28–39), and 26% (40+). For women: 30% (17–20), 32% (21–27), 34% (28–39), and 36% (40+). Soldiers are taped only if they exceed screening weight for their height; those over the body-fat limit enter the Army Body Composition Program.
How accurate is the Army tape test?
The circumference method estimates body fat within roughly ±3–4% of DEXA scan results for most people, but it can misjudge very muscular soldiers (overestimating) or those with unusual fat distribution. In 2023 the Army began allowing soldiers who score 540+ on the ACFT (with 80+ in each event) to be exempt from the body fat assessment, and one-site abdominal circumference assessments were introduced as a supplemental method.
How can I lower my body fat before a tape test?
Sustainable approaches: a moderate calorie deficit (300–500 kcal/day), high protein intake (1.6–2.2 g/kg) to preserve muscle, resistance training, and adequate sleep — poor sleep raises cortisol and abdominal fat. Avoid crash diets and dehydration tricks before taping: they sacrifice muscle, harm performance, and the waist measurement changes little in the short term.