Army Body Fat Calculator
Since July 2026 the Army judges body composition by waist-to-height ratio, and a Soldier meets the standard below 0.55. This calculator checks that ratio. It also estimates body fat percentage with the one-site tape equation the Army used from June 2023 until then.
Army Directive 2026-13, July 2026. Measure your waist at the navel.
Not an official assessment. Only a measurement taken by your unit counts.
How to use the Army Body Fat Calculator
- Pick a tab. Waist-to-height is the Army standard since July 2026, and Body fat % is the tape equation it replaced.
- Enter your measurements in inches and pounds, or switch to Metric.
- Press Check Ratio or Estimate Body Fat. Change any value and press again to compare.
The Army formulas
Waist-to-height ratio = waist at the navel ÷ height Men: body fat % = −26.97 − (0.12 × weight in lb) + (1.99 × abdomen in inches) Women: body fat % = −9.15 − (0.015 × weight in lb) + (1.27 × abdomen in inches)
Army Directive 2026-13, published in July 2026, makes the waist-to-height ratio the only Army body composition standard. A ratio below 0.55 meets it, and exactly 0.55 does not. The directive ends the height and weight tables and rescinds the tape test. The Army's ABCP FAQ records the ratio to three decimal places and drops any later digits, without rounding, so .549 passes and .550 fails. The calculator does the same. The two body fat equations come from that tape test, which Army Directive 2023-11 set on June 9, 2023. It measured the abdomen at the navel and rounded the result to the nearest whole percent, and the calculator does the same. Next to the estimate you see the AR 600-9 Table B-2 limit for your age group. This is not an official assessment.
Worked example
A Soldier who is 70 inches tall with a 36-inch waist has a ratio of 36 ÷ 70 = 0.514 and meets the standard. At 39 inches the ratio is 0.557, which does not. For body fat, take a man who weighs 210 lb with a 35-inch abdomen. The equation gives −26.97 − (0.12 × 210) + (1.99 × 35) = 17.48, which rounds to 17%. A woman at 165 lb and 30 inches gets −9.15 − (0.015 × 165) + (1.27 × 30) = 26.475, or 26%.
Frequently asked questions
What is the Army body composition standard in 2026?
A waist-to-height ratio below 0.55. Army Directive 2026-13, published in July 2026, made it the only standard and ended the height and weight tables. A Soldier who measures 0.55 or higher gets a second measurement the same duty day from a different team. If that confirms the result, the Soldier is flagged and enrolled in the Army Body Composition Program.
Does the Army round the waist-to-height ratio?
No. The Army's ABCP FAQ says the ratio is recorded to three decimal places and any later digits are disregarded. So 38.4999 ÷ 70 = 0.54999 records as .549 and passes, and 38.5 ÷ 70 records as .550 and fails.
Does the Army still use the tape test?
No. Directive 2026-13 rescinded the 2023 tape test directive, and a Soldier can no longer use a tape test or another body fat assessment to challenge a waist-to-height result. The tape test it replaced measured one site, the abdomen at the navel. It had been the only authorized tape method since June 8, 2024, when the older neck, waist and hip method ended.
What body fat limits does AR 600-9 list?
Table B-2 sets a maximum by age and sex. For men it is 20% at ages 17 to 20, 22% at 21 to 27, 24% at 28 to 39 and 26% at 40 and older. For women it is 30%, 32%, 34% and 36% in the same age groups. The calculator shows your limit next to the tape estimate and counts your age in whole years, so 20.5 falls in the 17 to 20 group. Under Directive 2026-13 only the waist-to-height ratio decides compliance.
Does a high fitness test score exempt me from the standard?
No. Directive 2026-13 says no Army Fitness Test score exempts a Soldier from the waist-to-height standard. It rescinded the earlier exemption for high scorers.
How do I measure my waist for the Army standard?
The Army measures the waistline at the navel. AR 600-9 describes the abdominal measurement against the skin, with the tape level and parallel to the floor, arms at the sides, read at the end of a normal relaxed breath out. Use the same tape each time so your numbers compare.
Is this an official Army assessment?
No. calc-hub.net has no connection to the US Army, and only a measurement taken by your unit counts. Use the result to see where you stand before the official one.