CALCULATOR
Army Body Fat Calculator
Body fat by the circumference method used in AR 600-9, checked against the maximum allowed for your age and sex.
Army standard
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Uses the circumference method and body composition standards published in AR 600-9. Standards are periodically revised, so confirm current figures with your unit before relying on this.
The Army body fat standard
The US Army uses a circumference-based tape method to estimate body fat when a soldier exceeds the screening weight for their height. For men the measurement uses neck and waist; for women it adds the hip. The formula is the same US Navy equation used more widely, applied against service-specific maximum allowances.
Maximum allowable body fat rises with age, reflecting normal changes in body composition. The thresholds used here follow AR 600-9. Standards are revised periodically and services differ, so treat this as preparation rather than an official result.
The tape method is an estimate with a three to four percentage point margin, which matters when someone sits close to the limit. Measurement technique, time of day and hydration all move the number, which is why practising consistent measurement before a real tape test is worthwhile.
The AR 600-9 tape method
Maximum allowable body fat by age
| Age group | Male maximum | Female maximum |
|---|---|---|
| 17-20 | 20% | 30% |
| 21-27 | 22% | 32% |
| 28-39 | 24% | 34% |
| 40 and over | 26% | 36% |
Standards rise with age to reflect normal changes in body composition. Figures shown follow AR 600-9. Services differ and standards are revised periodically, so confirm current requirements with your unit rather than relying on any website.
How the tape test is conducted
- Screening first. The tape test is normally only applied when a soldier exceeds the screening table weight for their height and age.
- Neck. Measured just below the larynx, tape sloping slightly downward at the front, without compressing the skin.
- Waist, men. At the navel, at the end of a normal exhale, relaxed abdomen.
- Waist, women. At the point of least abdominal circumference, typically above the navel.
- Hips, women. At the widest point of the buttocks.
- Averaging. Measurements are typically taken three times and averaged, rounded per the regulation.
Preparing if you are close to the limit
The circumference method carries a three to four percentage point margin of error, so someone within two points of their limit can pass or fail on measurement technique alone. Practising consistent self-measurement over several weeks is worthwhile, because it shows both your trend and how much your own readings vary. Hydration, recent meals, time of day and posture all move waist circumference by a centimetre or more.
The productive approach is the same as any fat loss: a moderate calorie deficit, protein at 1.6 to 2.2 g per kilogram to protect lean mass under a physical training load, and consistent resistance work. Crash dieting before a tape test costs strength and performance on the fitness test that usually accompanies it.
Frequently asked questions
What is the maximum body fat allowed in the Army?
How is the Army tape test measured?
Can muscular soldiers fail the tape test?
How accurate is the circumference method?
Sources
- US Department of the Army. Army Regulation 600-9, The Army Body Composition Program.
- Hodgdon JA, Beckett MB. Naval Health Research Center circumference method reports, 1984.
- National Institutes of Health, Office of Dietary Supplements. Nutrient fact sheets. ods.od.nih.gov
- NHS. Nutrition and health guidance. nhs.uk
- US Departments of Agriculture and Health and Human Services. Dietary Guidelines for Americans, 2025-2030. dietaryguidelines.gov
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General information, not medical advice. Consult a qualified professional before changing your diet, especially with a medical condition.