US Military Body Fat Calculator
Army ยท Navy ยท Marine Corps ยท Air Force & Space Force ยท Step-by-step formulas ยท Pass/Fail verdict
๐๏ธ Enter your measurements to calculate body fat percentage and see whether you meet the standards for all four US military branches.
Army Tape Method (AR 600-9, 2023)
The Army Body Composition Program updated its standards on June 12, 2023 (ALARACT 046/2023). The tape method uses circumference-based measurements to estimate body fat percentage using a formula derived from research at the Natick Laboratories.
Male Formula (one-site)
Female Formula (two-site)
Army Maximum Body Fat Standards (ALARACT 046/2023)
| Age Group | Male Max %BF | Female Max %BF |
|---|---|---|
| 17 to 20 | 20% | 30% |
| 21 to 27 | 22% | 32% |
| 28 to 39 | 24% | 34% |
| 40 and over | 26% | 36% |
Navy, Marine Corps, and Air Force Formulas
Navy / Marine Corps Formula
The US Navy and Marine Corps use the same circumference formula from the Naval Health Research Center:
Air Force / Space Force Formula
The Air Force uses a single-site abdominal circumference divided by height (the "abdominal circumference value" or ACV):
Maximum Body Fat Standards by Branch
| Branch | Age | Male Max | Female Max |
|---|---|---|---|
| Army | 17-20 | 20% | 30% |
| 21-27 | 22% | 32% | |
| 28-39 | 24% | 34% | |
| 40+ | 26% | 36% | |
| Navy | 17-21 | 22% | 33% |
| 22-29 | 23% | 34% | |
| 30+ | 23% | 34% | |
| Marines | 17-25 | 18% | 26% |
| 26+ | 18% | 26% | |
| Air Force | Under 30 | 20% | 28% |
| 30-39 | 24% | 32% | |
| 40+ | 26% | 34% |
How to Take Measurements Correctly
Measurement accuracy directly affects the result. The circumference tape method is sensitive to technique. All measurements should be taken three times and averaged, then rounded to the nearest 0.5 inch for the Army (or nearest 0.25 inch for Navy).
Abdomen / Waist
Stand upright with weight distributed evenly on both feet, arms relaxed at your sides. The tape passes horizontally around the body at the level of the navel (belly button) for all males and for Army/Navy females. For Air Force females, the abdomen is measured at the narrowest point of the torso. The tape should be snug but not compressing the skin or underlying tissue. The subject breathes normally; measurements are taken at the end of a normal exhalation, not at peak inhalation.
Neck
The tape is placed just below the larynx (Adam's apple) and slopes slightly downward toward the front of the neck. The subject should look straight ahead. The tape should be perpendicular to the long axis of the neck. Do not measure over the thyroid cartilage or too high on the throat.
Hip (Females Only)
The hip measurement is taken at the maximum circumference of the hips and buttocks, as viewed from the side. Both feet together, heels touching. The tape passes horizontally at the largest point. Clothing should not be worn for this measurement.
Army Body Composition Program (ABCP)
Soldiers who fail the tape test are flagged under AR 600-9. Flagging restricts favorable personnel actions including promotions, awards, and assignments. The flagged soldier has the option to request a supplemental body fat assessment using one of three clinical methods:
- Dual X-ray Absorptiometry (DXA): Considered the gold standard for body composition measurement. Measures bone mineral density, lean tissue, and fat tissue separately. Exposes the subject to a very low dose of radiation.
- InBody 770: Bioelectrical impedance analysis device cleared for Army use. Requires standardized pre-test conditions (fasting, no exercise, no caffeine for several hours).
- Bod Pod: Air displacement plethysmography. Measures body volume by displacement, then calculates density and body composition. Highly accurate and non-invasive.
Soldiers who pass the supplemental assessment are unflagged. Those who fail, or who decline the supplemental assessment, remain flagged and are enrolled in the ABCP, which requires participation in a supervised fitness and nutrition program with reassessment every six months.