Army Body Fat Calculator: 2023 One-Site Tape Test
Estimate body fat with the US Army 2023 one-site abdominal tape formula from weight and abdomen, and check it against the Army maximum for your age group and sex. Runs in your browser.
Enter your measurements to see your body fat estimate.
About the Army Body Fat Calculator
The Army Body Fat Calculator estimates body fat with the US Army one-site abdominal tape formula introduced in 2023, and checks the result against the Army maximum allowable body fat for your age group and sex. Enter your weight, your abdominal circumference at the navel, your age and your sex, in pounds and inches or in kilograms and centimetres. The page shows the estimated body fat percentage, the fat mass and lean mass, the ACE category, the Army maximum for your age, and whether the estimate meets that standard.
This is an estimate, not medical advice, and it is not an official Army assessment. Only a trained tape tester following the Army procedure can record a result for the Army Body Composition Program.
The 2023 one-site tape formula
Army Directive 2023-11 replaced the older multi-site tape test, which used the neck, waist and, for women, the hips, with a single abdominal measurement combined with body weight. Weight is in pounds and the abdominal circumference in inches:
If you enter metric values, the calculator converts them to pounds and inches before applying the formula, using exactly 0.45359237 kg per pound and 2.54 cm per inch.
How to measure
Steps
- Stand relaxed with your arms at your sides and your weight spread evenly on both feet.
- Place the tape horizontally around the abdomen at the level of the navel, snug but not compressing the skin.
- Read the tape at the end of a normal breath out. Take three readings and use their average.
- Enter the average with your weight, age and sex.
Maximum allowable body fat
- Aged 17 to 20: men 20 %, women 30 %.
- Aged 21 to 27: men 22 %, women 32 %.
- Aged 28 to 39: men 24 %, women 34 %.
- Aged 40 and over: men 26 %, women 36 %.
A result at or below the maximum for your group meets the standard. The 2023 directive also exempts soldiers who score highly on the Army Combat Fitness Test from the tape test; check the current regulation for the exact rule, because Army policy changes from time to time.
Worked example
A 25-year-old man who weighs 180 lb with a 36 in abdomen gets −26.97 − 0.12 × 180 + 1.99 × 36 = 23.07 % body fat. The maximum for men aged 21 to 27 is 22 %, so this estimate is over the maximum. A 30-year-old woman who weighs 140 lb with a 32 in abdomen gets 29.39 %, inside the 34 % maximum for her group.
Privacy
Nothing is uploaded: the formula runs in your browser and your measurements never leave your device.
Related tools
The Body Fat Calculator also offers the US Navy tape method and a BMI-based estimate. Check your body mass index with the BMI Calculator, or convert kilograms to pounds with the Mass Converter.
Sources
- US Army. Army Directive 2023-11, Army Body Fat Assessment for the Army Body Composition Program, June 2023, updating Army Regulation 600-9, The Army Body Composition Program.
- American Council on Exercise. Percent body fat norms.
Open-source credits
The calculations are implemented in-house in TypeScript, with no third-party library. They follow the published US Army 2023 one-site tape equations and maximum allowable body fat table, and the ACE category bands.