Army Body Fat Calculator
Estimate body fat with the 2023 U.S. Army one-site tape test (weight + waist) and check it against the AR 600-9 maximum-allowable standards for your age and sex.
The U.S. Army estimates body fat with a tape test — no calipers or scans. Since mid-2023 it uses a simpler one-site measurement, and this calculator runs that current method, then checks your result against the AR 600-9 maximum-allowable body-fat standards for your age and sex.
The 2023 one-site method (default)
The current method needs only two numbers:
- Body weight
- Abdominal circumference — measured horizontally at the navel
From those, body fat is estimated with the Army’s regression equations (weight in pounds, waist in inches):
- Men: %BF = −26.97 − 0.12 × weight + 1.99 × waist
- Women: %BF = −9.15 − 0.015 × weight + 1.27 × waist
The Army adopted this after a study of over 2,600 soldiers found the older multi-site test unfairly flagged muscular, fit soldiers. You can still switch to the legacy multi-site method (neck, waist, and hip) using the toggle for comparison.
Army maximum body-fat standards (AR 600-9)
The allowable percentage to remain in service increases with age:
| Age group | Men | Women |
|---|---|---|
| 17–20 | 20% | 30% |
| 21–27 | 22% | 32% |
| 28–39 | 24% | 34% |
| 40+ | 26% | 36% |
The calculator shows your estimated body fat, your age bracket’s limit, and how far you are under or over the standard.
What the result means
Soldiers are only tape-tested if they exceed the Army’s screening-weight-for-height table; passing the body-fat standard then satisfies the requirement. Because the tape test is a screening estimate with a margin of a few percent, use it to track progress and gauge where you stand rather than as an exact clinical measurement.
Frequently asked questions
How does the Army measure body fat now?
Since mid-2023 the Army uses a one-site tape test: it estimates body fat from just your body weight and your abdominal circumference measured at the navel. This replaced the older multi-site test that also required neck and (for women) hip measurements.
What are the Army body fat standards?
AR 600-9 sets a maximum allowable body-fat percentage that rises with age. To remain in service it's 20% (17–20), 22% (21–27), 24% (28–39), and 26% (40+) for men, and 30/32/34/36% across the same bands for women. This calculator checks your result against your bracket.
Why did the Army change the method in 2023?
The Army Comprehensive Body Composition Study of over 2,600 soldiers found the old multi-site test often flagged very muscular, fit soldiers as over the limit. The simpler one-site abdominal measurement was adopted to be quicker and fairer.
Can I still use the old multi-site method?
Yes — switch the method toggle to "Legacy tape" to use the pre-2023 neck/waist/hip circumference equations (the same family the Navy uses). It's useful for comparison, but the one-site method is the current Army standard.