Army Body Fat Calculator

How the Army body fat formula works

The U.S. Army tape test uses circumference measurements and height to estimate body fat percentage. Men report neck and waist, while women include hip circumference to reflect typical fat distribution. The formula applies logarithms to the measurements, which helps adjust for body size and produce a standardized body fat percentage.

Measurement checklist

Measure the neck just below the larynx with shoulders relaxed.
Measure the waist at the navel while breathing normally.
For hips, wrap the tape around the widest part of the glutes.
Repeat each measurement twice and use the average for best accuracy.

Understanding compliance thresholds

Army standards cap allowable body fat by age group and sex. Use the thresholds table after you calculate to compare your result against the maximum allowed for your age. If you are close to the cutoff, re-measure and keep technique consistent to avoid false fails.

FAQ

What formula does the Army body fat calculator use?

We use the U.S. Army circumference (tape test) equations, which mirror the DoD method with logarithmic terms for height and measurements.

Which measurements do I need?

Men enter height, neck, waist, and weight. Women add a hip measurement for accuracy.

Why do I have to enter weight?

Weight is used to estimate fat mass and lean mass after the body fat percentage is calculated.

How do I check compliance?

Compare your body fat percentage to the Army maximums for your age group. The calculator displays the current thresholds so you can see where you stand.

Are the results exact?

No. Tape tests are estimates and can shift with hydration, posture, and measurement technique.

Can I use metric units?

Yes. Toggle between metric and imperial units and the calculator converts measurements automatically.

Informational only, not medical advice. Consult a healthcare professional for personalized guidance.