The 2023 change: one measurement now decides it
In June 2023, Army Directive 2023-11 replaced the old multi-site tape test with a one-site method: abdominal circumference at the navel plus body weight, same procedure for men and women. After a 12-month transition, it became the only authorized circumference-based tape method. The change followed the Army Comprehensive Body Composition study, which validated the simpler equation against DEXA scans across thousands of Soldiers. The equations this calculator uses are the ones printed on the official DA Form 5500/5501 worksheets: men %BF = −26.97 − 0.12×weight(lb) + 1.99×abdomen(in); women %BF = −9.15 − 0.015×weight(lb) + 1.27×abdomen(in).
How to measure like the Army does
Tape at the level of the navel, horizontal all the way around, snug without compressing skin, arms at the sides, measured at the end of a normal relaxed exhalation — no sucking in. Official tapings take three measurements and use the average, recorded to the half-inch, and weight to the nearest pound. Measure at the same time of day if you're tracking progress.
The AR 600-9 standards
| Age | Men (max %BF) | Women (max %BF) |
|---|---|---|
| 17–20 | 20% | 30% |
| 21–27 | 22% | 32% |
| 28–39 | 24% | 34% |
| 40+ | 26% | 36% |
Exemptions and what happens if you exceed the standard
Soldiers scoring 540+ on the ACFT with at least 80 points in every event are exempt from the body fat assessment entirely. If you fail the tape, you can request a supplemental assessment — DEXA, InBody 770 or Bod Pod, where reasonably available — whose result overrides the tape. Otherwise, enrollment in the Army Body Composition Program requires showing satisfactory progress (commonly cited as 3–8 lb or ~1% body fat per month).
Planning to bring the number down?
The tape responds to abdominal fat, and abdominal fat responds to a sustained, honest calorie deficit — set one from your TDEE with the deficit calculator, keep protein high with the protein calculator to protect the lean mass that the ACFT rewards, and track honestly with the measured-TDEE calibrator.
Unofficial planning tool. Official determinations use the Army's ABCP calculator, posted charts, and regulation taping procedure — always defer to your unit's assessment.
Frequently asked questions
What is the new Army tape test formula?
The 2023 one-site equations from the DA 5500/5501 worksheets: men %BF = −26.97 − 0.12×weight(lb) + 1.99×abdomen(in); women %BF = −9.15 − 0.015×weight(lb) + 1.27×abdomen(in), with the abdomen taped at the navel.
Can I still use the old neck-and-waist tape test?
Not officially — after the 12-month transition that followed Army Directive 2023-11, the one-site test is the only authorized circumference method. This calculator includes the legacy formula for comparison and for tracking against old records.
How do I get exempt from the Army body fat assessment?
Score 540 or higher on the ACFT with a minimum of 80 points in each event. Otherwise, meet the screening weight for your height, or pass the tape — and if the tape says you fail, a supplemental DEXA/InBody/Bod Pod assessment can override it.
Why does the Army measure at the belly button now?
Abdominal circumference tracks visceral fat — the depot most tied to health and performance outcomes — and the Army's validation study found one site plus weight predicted DEXA body fat about as well as the old three-site method, with less measurement error between testers.
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Calorie Deficit Calculator
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Macro Calculator
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Maintenance Calorie Calculator
Find the daily calories that keep your weight stable
Sources
- Department of the Army. Army Regulation 600-9: The Army Body Composition Program. [link]
- Taylor KM, Castellani MP, Bartlett PM, et al. Development and cross-validation of a circumference-based predictive equation to estimate body fat in an active population. Obes Sci Pract. 2024. [link]
- Hodgdon JA, Beckett MB. Prediction of percent body fat for U.S. Navy men and women from body circumferences and height. Naval Health Research Center. 1984. [link]