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Free Army body fat calculator using the standard circumference tape formula (height, neck, waist, and hip for females). Compare your body fat % to AR 600-9 maximums by age, see margin to standard, and review ACFT exemption and ABCP context. Practice tool — not an official DA assessment.
Last updated: May 24, 2026
Scoring your ACFT? Army ACFT calculator
Optional — not used in tape formula
Estimated body fat
21.7%
Tape formula · age bracket 21–27
Max allowed
22%
Margin
+0.3%
Meets Army standard
Body fat 21.7% is within the 22% max for male age 21–27, but only 0.3% under the limit — build buffer before a record test.
Training estimate only — official tests use trained measurers and current AR 600-9 / Army directives.
Estimated body fat from tape measurements vs your age/gender maximum under AR 600-9.
21.7%
Male 21, 5′9″, neck 15″, waist 36″
22%
Meets Army standard
+0.3%
Body fat 21.7% is within the 22% max for male age 21–27, but only 0.3% under the limit — build buffer before a record test.
5′9″ · neck 15″ · waist 36″ · max 22% (ages 21–27)
Body fat
21.7%
Max allowed
22%
Margin
+0.3%
Status
Meets Army standard
| Gender | Age | Maximum body fat |
|---|---|---|
| Male | 17–20 | 20% |
| Male | 21–27 | 22% |
| Male | 28–39 | 24% |
| Male | 40+ | 26% |
| Female | 17–20 | 30% |
| Female | 21–27 | 32% |
| Female | 28–39 | 34% |
| Female | 40+ | 36% |
Stand straight without shoes; measure to nearest 0.5 inch per Army SOP
Used in the body-fat equation — not a pass/fail line by itself
Below the larynx (Adam’s apple), tape sloping slightly downward to the front
Do not flare neck; average 3 rounds, nearest 0.5 inch
Horizontal at the navel (umbilicus) level, arms at sides, normal breath
Official Army abdominal site for the circumference-based assessment
Largest protrusion of the buttocks, tape level front to back
Required for female tape formula (waist + hip − neck)
Male: %BF = 86.010×log₁₀(waist − neck) − 70.041×log₁₀(height) + 36.76
Female: %BF = 163.205×log₁₀(waist + hip − neck) − 97.684×log₁₀(height) − 78.387
All measurements in inches. Example male: waist 36″, neck 15″, height 69″ → log₁₀(21) and log₁₀(69) → about 21.7% body fat before comparing to your age max.
540+ on the record ACFT with 80+ points on each of six events may exempt you from the body-fat assessment under policy updated with the 2023 Army Body Composition Program. Verify current rules with your unit — exemptions can change.
Gold-standard reference; used when supplemental assessment is approved
Unit-dependent availability; follow manufacturer and Army SOP
Alternate lab method when reasonably available
26.2% vs 22% max
Exceeds Army standard
29.2% vs 34% max
+4.8% margin
30.2% vs 24% max
-6.2% over
Share with soldiers preparing for tape test or ABCP
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