Army Body Fat Calculator
Based on the Army Body Composition Program. Take the average of at least three measurements, rounded to the nearest pound or 0.5 inch.
Gender
Waist (at navel)
Neck
Height
Fitness & Health Calculators
Related
Result
—
Enter values and click Calculate
Body fat % will appear here after calculation.
Army Body Fat Standards (% Body Fat)
| Age Group | Male Max | Female Max |
|---|---|---|
| 17 – 20 | 20% | 30% |
| 21 – 27 | 22% | 32% |
| 28 – 39 | 24% | 34% |
| 40+ | 26% | 36% |
How It Works
The U.S. Army uses circumference-based formulas to estimate body fat percentage. Males require waist and neck measurements; females require waist, neck, and hip measurements. The result is compared against age- and gender-specific standards from Army Regulation 600-9.
Male Formula
%BF = 86.010 × log₁₀(waist − neck) − 70.041 × log₁₀(height) + 36.76
Female Formula
%BF = 163.205 × log₁₀(waist + hip − neck) − 97.684 × log₁₀(height) − 78.387
Tips for Accurate Measurement
Measure waist at the navel, neck just below the larynx, hips at the widest point. Take 3 measurements and average them. Round to nearest 0.5 inch. Measurements should be taken in the morning before eating.