About the Army Body Fat Calculator
This Army body fat calculator checks you against the standard the US Army actually enforces today and estimates your body fat percentage the way the Army did before. Army Directive 2026-13, effective July 2026, made the waist-to-height ratio (WHtR) the sole Army body composition standard: your waist measured at the navel divided by your height, both in inches, must be less than 0.55. The height and weight screening tables, the tape test and all supplemental body fat methods were discontinued, and no Army Fitness Test score exempts a soldier any more.
Because many soldiers, cadets and recruits still want a body fat number, the calculator also runs the one-site abdominal tape equation introduced in 2023 (Army Directive 2023-11) — body weight plus one abdominal measurement — or, if you prefer, the older multi-site DoD equation using neck, waist and (for women) hips. That estimate is compared with the former age- and sex-based maximums (20–26% for men, 30–36% for women) for reference only; those limits no longer decide pass or fail.
Enter measurements in pounds and inches. The WHtR is recorded to three decimals and truncated, not rounded, so 0.549 passes and 0.550 fails. A soldier who measures 0.55 or more is re-measured the same duty day by a different team before being flagged and enrolled in the Army Body Composition Program. The Army is running a 180-day assessment of the new standard, so confirm current guidance with your unit.
With the default inputs, the estimated body fat is 23.1%. Change any value above to recalculate instantly.
How to use the army body fat calculator
- 1Select your sex, enter your age and your height in inches.
- 2Measure your waist horizontally at the navel and enter it in inches.
- 3Read your waist-to-height ratio and whether it is under the 0.55 Army standard.
- 4For a body fat estimate, keep the one-site equation and enter your weight, or switch to the multi-site equation and add neck (and hip for women).
- 5Compare the body fat estimate with the former age-group limits for reference.
Formula and method
The current standard (Army Directive 2026-13, effective July 2026) is the waist-to-height ratio: waist circumference measured at the navel divided by height, both in inches. It is recorded to three decimal places without rounding, and a soldier passes only with a ratio below 0.55; 0.55 or more triggers a same-day confirmation measurement by another team, then a flag and enrolment in the Army Body Composition Program. There is no age or sex adjustment and no fitness-test exemption.
The body fat estimate uses the one-site equation from Army Directive 2023-11 (the only authorized tape method from June 2024 until July 2026), with weight W in pounds and abdominal circumference A in inches; the Army rounded that result to the nearest whole percent, while this page shows one decimal. The legacy multi-site DoD equations are men 86.010 × log10(abdomen − neck) − 70.041 × log10(height) + 36.76 and women 163.205 × log10(waist + hip − neck) − 97.684 × log10(height) − 78.387. The former limits were 20/22/24/26% for men and 30/32/34/36% for women aged 17–20, 21–27, 28–39 and 40+.
- WHtR
- Waist-to-height ratio
- W
- Body weight in pounds
- A
- Abdominal circumference at the navel, inches
- BF%
- Estimated body fat percentage
Worked examples
30-year-old male, 5 ft 10 in, 180 lb, 36 in waist
WHtR = 36 ÷ 70 = 0.5142…, recorded as 0.514, which is under 0.55, so he meets the current standard; his waist would have to stay under 0.55 × 70 = 38.5 in. The one-site estimate is −26.97 − 0.12 × 180 + 1.99 × 36 = 23.07% body fat, just under the former 24% limit for men aged 28–39.
24-year-old female, 5 ft 5 in, 145 lb, 33 in waist
WHtR = 33 ÷ 65 = 0.5076…, recorded as 0.507, so she passes. Her one-site estimate is −9.15 − 0.015 × 145 + 1.27 × 33 = 30.6%, which would also have been within the former 32% limit for women aged 21–27.
35-year-old male, 5 ft 9 in, 205 lb, 40 in waist
WHtR = 40 ÷ 69 = 0.5797…, recorded as 0.579 — at or above 0.55, so he fails and would be re-measured the same day before being flagged. At 69 in tall his waist must be under 0.55 × 69 = 37.95 in, about 2 in smaller. His one-site body fat estimate is −26.97 − 0.12 × 205 + 1.99 × 40 = 28.03%, also above the former 24% limit.
Legacy multi-site equation, male 20, 70 in tall
86.010 × log10(35 − 15) − 70.041 × log10(70) + 36.76 = 19.4% body fat, just under the former 20% maximum for men aged 17–20. His WHtR is 35 ÷ 70 = 0.500, comfortably under 0.55.
Frequently asked questions
What is the new Army body composition standard?+
Since Army Directive 2026-13 (July 2026) the only standard is a waist-to-height ratio below 0.55: waist at the navel divided by height, both in inches, recorded to three decimals without rounding. It applies to all soldiers and to USMA and Senior ROTC cadets, with no age or sex adjustment.
Does the Army still use the tape test?+
No. The directive discontinued the height and weight screening tables, the circumference-based tape test and all supplemental body fat assessments such as DEXA; none can be used to challenge a WHtR result. The one-site tape test had been the only authorized tape method from June 2024 until then.
Can a high Army Fitness Test score exempt me?+
Not any more. Army Directive 2025-17 had exempted soldiers scoring 465 or more on the AFT with at least 80 points per event, but Army Directive 2026-13 rescinded it and states that no AFT score exempts a soldier from the WHtR standard.
What happens if I fail the WHtR?+
A different team re-measures you on the same duty day. If you still measure 0.55 or more you are flagged and enrolled in the Army Body Composition Program until you meet the standard. No soldier will be separated for WHtR failure until the Army completes its 180-day assessment and issues further guidance.
What were the old Army body fat limits?+
Under the tape-test system the maximum allowable body fat was 20%, 22%, 24% and 26% for men aged 17–20, 21–27, 28–39 and 40+, and 30%, 32%, 34% and 36% for women in the same age groups. They were rescinded in July 2026.
This tool gives general estimates and is not medical advice. Talk to a doctor or qualified professional about your health, diet or training.