Note: This tool provides an unofficial estimate for education/planning only. Official determinations depend on standardized measurement procedures and current AR 600‑9/unit guidance. This is not medical advice—do not attempt rapid weight loss, dehydration, diuretics/laxatives, or sauna “cutting” to change the result. If a large change is indicated, or you have medical conditions or a history of eating disorders, consult a clinician/dietitian.
Enter your sex, age, weight, and waist circumference (measured at the navel) to estimate your Army body fat percentage. Age is used to determine the maximum allowable body-fat standard for pass/fail; it is not part of the one‑site body-fat estimate itself.
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Army Body Fat Formula
The 2023 Army one‑site tape test estimates body fat percentage from body weight and waist circumference (measured at the navel). The equations below assume weight in pounds (lb) and waist in inches (in).
Male: %BF = −26.97 − 0.12 × weight + 1.99 × waist
Female: %BF = −9.15 − 0.015 × weight + 1.27 × waist
- BF% is the estimated body fat percentage
- weight is your body weight (lb)
- waist is your waist circumference at the navel (in)
Like any field estimate, this method is not perfectly accurate for every individual. Because the estimate is heavily influenced by waist circumference, reducing abdominal circumference (typically via fat loss) is usually the most direct way to improve the result.
Losing body fat ultimately requires a sustained calorie deficit (burning more energy than you consume), typically supported by a combination of nutrition and regular physical activity.
Army Body Fat Definition
Army body fat percentage is a standardized estimate used by the U.S. Army to assess whether a Soldier (or applicant, where applicable) meets Army body composition standards under AR 600‑9.
Army Body Fat Requirements
- Age 17 to 20 – 20% for males, 30% for females;
- Age 21 to 27 – 22% for males, 32% for females;
- Age 28 to 39 – 24% for males, 34% for females;
- Age over 40 – 26% for males, 36% for females.
How to calculate army body fat?
How to calculate army body fat?
- First, measure your waist.
Measure your waist circumference at the navel.
- Next, measure your body weight.
Measure your body weight.
- Next, enter sex and age.
Select your sex and enter your age to determine the applicable pass/fail standard.
- Finally, calculate the Army body fat estimate.
Calculate your estimated body fat percentage using the one-site formula above.
FAQ
What is the significance of measuring body fat for the army?
Measuring body fat is crucial for the army as it helps in determining an individual’s physical fitness and suitability for service. It helps ensure personnel can meet the physical demands of their duties.
Can the army body fat formula be used by civilians?
Yes, the Army body fat formula can be used by civilians as a general guide to estimate body fat percentage. However, individuals should note that it may not be 100% accurate for all body types.
Why is waist circumference so important in the army body fat formula?
Waist circumference is a key factor because it is a practical proxy for abdominal fat, which is associated with increased health risk.
Is it possible to meet the army’s body fat requirements through diet alone?
While diet plays a crucial role in reducing body fat, meeting the army’s body fat requirements typically requires a combination of a healthy diet and regular physical activity to effectively lose fat and improve body composition.
Calculator Change Log:
- 6/12/25 – Updated calculator to use 2023 one-site tape-test formulas and added information on exemptions and an estimate of how much weight or waist reduction may be needed to pass.
