Does your body fat meet the Army standard?

How is Army body fat different from the standard Navy method?

It isn't a different formula at all — the Army adopted the same circumference-based tape-test method the Navy uses (neck, waist, and height for men; neck, waist, hip, and height for women). What differs is the maximum allowable body fat percentage applied against the result, which the Army sets by age bracket and sex under AR 600-9, rather than any change to the underlying measurement math. See the Body Fat Calculator for the same formula without the military pass/fail overlay.

What happens if a soldier exceeds the standard?

Exceeding the body fat standard typically enrolls a soldier in a body composition monitoring or improvement program, which can affect evaluations, promotions, and in some cases continued service if targets aren't met within a given timeframe. Exact consequences depend on current Army policy, command discretion, and whether it's a first occurrence — this calculator only estimates the pass/fail line, not any administrative outcome.

How do I measure correctly?

Measure the neck just below the larynx (Adam's apple), the waist level with the navel for men or at the narrowest point per Army protocol for women, and hips at the widest point for women. Use a flexible tape, keep it snug against the skin without compressing it, and take readings standing relaxed rather than flexed or sucking in — inconsistent technique is one of the biggest sources of error in tape-test results.

Does this apply to all military branches?

No — this calculator applies the US Army's specific age-and-sex standards under AR 600-9. The Navy, Air Force, Marine Corps, and Coast Guard each set their own maximum allowable body fat percentages and, in some cases, their own measurement protocols, which can differ from the Army's even though several branches use a broadly similar tape-measurement technique.

Worked example: a 25-year-old man, 70 inches tall, 16-inch neck, 34-inch waist: body fat% = 86.010 × log10(34−16) − 70.041 × log10(70) + 36.76 ≈ 15.5%. The Army max for a man aged 21-27 is 22%, so 15.5% is a clear PASS. A 25-year-old woman at 64 inches tall with a 13-inch neck, 30-inch waist, and 38-inch hip: body fat% = 163.205 × log10(30+38−13) − 97.684 × log10(64) − 78.387 ≈ 29.2%, versus a 32% max for her age bracket — also a PASS, though closer to the limit.