Army Body Fat Calculator (Tape Test, AR 600-9)

The AFT Calculator Army body fat calculator checks waist circumference at the navel against height to assess the 2026 waist-to-height standard. We take both measurements in the same units, and our calculator reports the ratio to three decimal places.

A ratio below 0.55 receives a pass flag, and a ratio of 0.55 or higher receives a fail flag. AFT Calculator shows a legacy AR 600-9 one-site tape-test estimate alongside the ratio when you enter body weight, sex, and age. Run the calculator now to check your result.

Our Army body fat calculator uses five inputs, each explained below:

Height for the AFT Calculator is entered in inches, measured without shoes, because the waist-to-height ratio divides waist circumference by height. Soldiers stand upright on a flat surface and record height to the nearest half inch.

For measurements taken in centimetres, divide the centimetre value by 2.54 before entering height. Our calculator uses matching units for the waist and height measurements.

Waist circumference is entered in inches after measuring around the abdomen at the navel. The tape stays parallel to the floor and snug against the skin without compressing it.

Read the waist measurement at the end of a relaxed exhale, with arms at the sides. For the 2026 waist-to-height calculation, round the waist measurement down to the nearest half inch before entering it; AFT Calculator combines waist circumference with height to calculate the ratio.

Body weight is entered in pounds for the legacy one-site tape-test estimate. For an official-style measurement, soldiers weigh in stocking feet while wearing the authorized physical-fitness uniform: trunks and a T-shirt, without running shoes. The scale reading is recorded to the nearest whole pound, rounding fractions below 0.5 pound down and fractions of 0.5 pound or more up, with no clothing weight subtracted.

The legacy tape-test mode combines body weight with waist circumference and sex to estimate body-fat percentage. The 2026 waist-to-height mode does not use body weight, while the reference-only height-and-weight screening mode compares body weight with the former tables.

Sex and age band set the maximum body fat percentage for the legacy tape-test estimate. AFT Calculator uses four age bands: 17–20, 21–27, 28–39, and 40 and older. The legacy limits range from 20% to 26% for males and 30% to 36% for females.

Sex and age do not change the 2026 waist-to-height check, which applies the same 0.55 limit to all soldiers.

The Army body fat standard changed in July 2026 from the AR 600-9 tape-test framework to a waist-to-height ratio under Army Directive 2026-13. The table below compares the methods and screening rules before and after July 2026.[1][2]

Sources: [1] Headquarters, Department of the Army, "The Army Body Composition Program" (AR 600-9), as amended by Army Directive 2023-11, "Army Body Fat Assessment for the Army Body Composition Program" (June 2023), and Army Directive 2025-17 (September 2025). [2] Secretary of the Army Dan Driscoll, "Army Directive 2026-13 (Army Body Composition Program and Standards)" (1 July 2026).

The 0.55 waist-to-height limit is the passing standard Army Directive 2026-13 sets for Regular Army, Army National Guard, and Army Reserve Soldiers, effective July 2026: the ratio must stay below 0.55. Soldiers calculate the ratio by dividing waist circumference measured at the navel by height, using the same units, and the limit does not vary by sex, age, or component.

The Army records the ratio to three decimal places without rounding: 0.549 passes, while 0.550 fails. Secretary of the Army Dan Driscoll set the uniform standard as a WHtR "less than and not equal to 0.55" in "Army Directive 2026-13 (Army Body Composition Program and Standards)", July 2026.

The legacy maximum body fat percentages by age and sex appear in AR 600-9, Table B-2, which sets the limits by age band and sex. The legacy maximums below apply to the former tape-test standard.

Source: Table B-2, "Maximum allowable percent body fat standards," in "The Army Body Composition Program" (AR 600-9) by Headquarters, Department of the Army, June 2013.

The Army replaced the tape test with waist-to-height ratio because waist-to-height ratio provides a simpler screening measure than estimating body fat percentage from tape measurements. Tape results can vary with tape placement, tension, breathing, body shape, and assessor technique, as documented in "Anthropometric measurement error and the assessment of nutritional status" by S. J. Ulijaszek and D. A. Kerr, British Journal of Nutrition, September 1999. A single waist-to-height ratio uses waist circumference and height, though accurate waist measurement still depends on consistent technique.

A 2012 systematic review and meta-analysis by Ashwell, Gunn, and Gibson, "Waist-to-height ratio is a better screening tool than waist circumference and BMI for adult cardiometabolic risk factors: systematic review and meta-analysis" (Obesity Reviews, March 2012), found that waist circumference and waist-to-height ratio screen for cardiometabolic health risks, with waist-to-height ratio outperforming BMI. Waist-to-height ratio adjusts waist size for a person’s height and gives a straightforward screening value, but the ratio does not directly measure body fat or diagnose health conditions.

To calculate Army body fat by hand, you need a tape measure, a height-measuring tool, and a scale for the legacy estimate. Record height and waist in inches, and record body weight in pounds.

The four steps below show how to measure height and waist, calculate the current ratio, and compare the legacy body fat estimate.

Measure height without shoes before calculating Army body fat under the 2026 waist-to-height standard. Stand upright on a flat, level surface with your back straight, eyes forward, and chin parallel to the floor.

Place a level measuring tool vertically against the highest point of your head, forming a right angle with the floor. Record your height in inches to the nearest half inch, and use the same unit for the waist measurement before dividing waist circumference by height.

Measure the waist at navel level with a flexible tape directly against the skin. Keep the tape horizontal and snug without compressing the skin, then read the measurement after a normal, relaxed exhale.

Repeat the waist measurement three times and round each reading down to the nearest half inch. Carry the recorded waist measurement and the recorded height measurement into the waist-to-height ratio calculation.

For the 2026 Army waist-to-height check, divide waist circumference by height using the same units, such as inches. The formula is waist ÷ height = waist-to-height ratio.

Record the ratio to three decimal places without rounding, discarding any digits after the third decimal. For example, 0.549888 becomes 0.549, while 0.550 reaches the Army’s 0.55 limit and does not pass. The three-decimal ratio is the current pass check, and the legacy AR 600-9 body fat percentage serves as a comparison estimate.

The legacy AR 600-9 one-site tape formula estimates body fat percentage from waist circumference at the navel and body weight. The male formula is −26.97 − (0.12 × weight in pounds) + (1.99 × waist in inches); the female formula is −9.15 − (0.015 × weight in pounds) + (1.27 × waist in inches).

Compare the estimated percentage with the legacy maximum for the soldier’s sex and age band. The estimate serves as a legacy comparison, not the 2026 waist-to-height pass check, and the one-site equations come from Table B-5 of ALARACT 046/2023, according to the June 2023 message by Headquarters, Department of the Army implementing Army Directive 2023-11.

AFT Calculator pairs an Army body fat result with the AFT score calculator by running both checks in one session. Our body-fat result shows waist-to-height compliance, while the AFT result shows the total fitness score and event-level status.

Read both results together to assess body composition and fitness status. A high AFT score does not replace the current waist-to-height check, and the AFT Calculator exemption check shows whether a score-based rule applies under current guidance. Open the AFT score calculator next to check your fitness results.

The soldiers who follow special Army body fat rules are listed below:

• Pregnant Soldiers and postpartum Soldiers during the 365-day exemption after pregnancy ends.
• Soldiers with major limb loss, who remain subject to Soldierly appearance requirements.
• Soldiers on continued active duty or continued active Reserve status under retention provisions.
• Soldiers hospitalized for 30 or more continuous days.
• Soldiers with an approved temporary exception to policy.
• Regular Army and Active Guard Reserve Soldiers referred for medical examination when a medical cause may affect weight or compliance.

National Guard and Army Reserve body fat checks take place at least twice per calendar year, with commanders able to order additional checks. "Army Directive 2026-13 (Army Body Composition Program and Standards)", signed by the Secretary of the Army in July 2026, applies the same waist-to-height standard to Guard and Reserve soldiers: the ratio must be below 0.55.

Postpartum Soldiers remain exempt from Army body-composition standards during pregnancy and for 365 days after pregnancy concludes, including perinatal loss, according to "Army Directive 2022-06 (Parenthood, Pregnancy, and Postpartum)" by Secretary of the Army Christine Wormuth, April 2022, which extended the AR 600-9 exemption from 180 to 365 days. After the exemption ends, the Army standard applies again.