Is this an official U.S. Army calculator?

No. It is a reference implementation for self-checking. Official determinations depend on current Army procedure and authorized measurement.

What measurements does the one-site method use?

It uses body weight and abdominal circumference at the navel, with age and sex used for the reference limit comparison.

Why can another calculator show a different result?

Some pages use older multi-site circumference formulas or different rounding. The one-site Army context is a different model.

Army Body Fat Calculator

Estimate body fat percentage with the U.S. Army one-site tape test context and compare the result with age and sex reference limits.

Reference estimate only

This calculator is not an official U.S. Army determination, enlistment decision, medical diagnosis, or service clearance. Policy context reviewed: 2026-05.

Method

US Army one-site tape test 2023+Uses body weight and abdominal circumference at the navel.

Legacy multi-site circumference formulaIncluded only for comparison with older tape-test calculators.

Sex

Male

Female

Age

Weight (lb)

Abdominal circumference (in)

Measurement note

For the one-site method, measure abdomen at the navel with a non-stretch tape, level around the body, without compressing skin. Small tape-placement errors can change the result near a limit.

U.S. Army One-Site Tape Test Context

English search intent for this page is strongly tied to U.S. Army body-composition screening. The primary calculator therefore uses the one-site tape-test context: body weight and abdominal circumference at the navel.

BF%_{m e n} = - 26.97 - 0.12 \times weight_{l b} + 1.99 \times abdomen_{in}

One-site estimate for men.

BF%_{w o m e n} = - 9.15 - 0.015 \times weight_{l b} + 1.27 \times abdomen_{in}

One-site estimate for women.

Official Use Caveat

This page is a reference calculator, not an official determination. Official procedures can include height/weight screening, authorized tape measurement, Army Fitness Test context, and supplemental assessment where available.

Reference only

Do not use this page as proof of compliance, enlistment eligibility, medical status, or service clearance.

Frequently Asked Questions

Sources and References

Calculations are based on the listed reference sources. Links open in a new tab.

Updated: June 2, 2026

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