Army body fat calculator
Estimate body fat percentage with the Army AR 600-9 tape-measure method.
What this calculator covers
Use this Army body fat calculator to estimate body fat percentage from tape measurements instead of scale weight.
The walkthrough keeps the circumference term, inch conversions, and final percentage visible so the Army-method math is easy to audit.
Frequently asked questions
- What measurements does the Army tape method require?
- Male soldiers need height, neck circumference, and waist circumference. Female soldiers additionally need hip circumference. All measurements are taken at specific anatomical landmarks described in AR 600-9.
- How is the Army method different from the U.S. Navy method?
- Both are circumference-based tape-measure methods that use logarithmic formulas. The Army AR 600-9 formula uses slightly different coefficients than the Navy method, which can produce results that differ by a percentage point or two from the same measurements.
- How accurate is a tape-measure body-fat estimate?
- Circumference methods are practical for field screening but less precise than lab techniques such as DEXA or hydrostatic weighing. Measurement placement and tape tension both affect the result, so consistent landmarking matters more than extra decimal places.
- Does this result determine Army fitness compliance?
- Body-fat standards and screen thresholds are defined by Army regulation and are updated periodically. This calculator is an educational estimate — consult current AR 600-9 and speak with a unit fitness officer for any compliance determination.
Tool
Run the calculation
Result
RESULT · BODY FAT
â„–220
Primary result
17.5%
Using the Army AR 600-9 circumference method, the selected male measurements estimate body fat at 17.5%.
- Height used
- 70.0 in
- Circumference term
- 19 in
- Method
- Army AR 600-9 (male)
- Estimated body fat
- 17.5%
Step-by-step solution
- 1.Convert the tape measurements to inches internally: height 70, neck 15, waist 34.
- 2.Build the Army circumference term 34 - 15 = 19.
- 3.Apply the male Army log formula and round to one decimal place for 17.5%.
Walkthrough
Visual walkthrough
The Army tape method compares a circumference term with height to estimate body-fat percentage without using scale weight.
01
Normalize measurements to inches
70.0 in -> 70 in
The published Army coefficients use inch-based measurements before the logarithms are applied.
02
Build the circumference term
34 - 15 = 19
Men use waist minus neck, while women use waist plus hips minus neck.
03
Read the estimated percentage
This tape-based method is practical for field checks but less precise than lab methods such as DEXA.
17.5%