Military Waist-to-Height Standards by Branch (2026)

At a Glance

The Army, Navy, Air Force and Space Force use a 0.55 limit; the Marine Corps is stricter at 0.52. Height and weight tables are no longer used by any Department of Defense service.

Not sure where you stand? See the maximum waist for your height: Army · Navy · Air Force & Space Force · Marine Corps.

What's the Same Across the Department of Defense

A December 18, 2025 memo from the Under Secretary of War for Personnel and Readiness set the baseline that took effect January 1, 2026:

• Height and weight tables are no longer used to evaluate body composition.
• Each service's waist-to-height limit must be below 0.55.
• Anyone at 0.55 or above gets a body fat calculation, with standards no stricter than 18% for men and 26% for women.
• Body composition is evaluated twice per year.
• Waist is measured at the midpoint between the lowest rib and the top of the hip bone (usually at or just above the navel); waist and height are recorded in inches, rounded down to the nearest half inch.

Each service then writes its own rules on top of this baseline, which is why the details below differ.

Army

Waist-to-height ratio is the Army's only body composition standard. The ratio must be less than, and not equal to, 0.55, measured across the navel. A failing reading is confirmed by a different team on the same day; a confirmed failure means a flag and enrollment in the Army Body Composition Program. No Army Fitness Test score exempts a Soldier, and the tape test can't be used to challenge a result. Full Army guide →

Navy

Sailors pass with a waist-to-height ratio of 0.5499 or below, measured at the navel by Command Fitness Leaders. Over that, a body fat estimate applies, with maximums of 26% for men and 36% for women. The assessment is done within 45 days of the Physical Readiness Test. Each waist reading is rounded down to the nearest half inch, while height is rounded up. See the Navy waist chart for every height →

Air Force

Waist-to-height ratio is part of the scored Physical Fitness Readiness Assessment: the waist is rounded down to the nearest half inch and the ratio is truncated (not rounded) to two decimals. A ratio above 0.55 leads to a body fat assessment, by InBody scan where available or a tape method otherwise, with limits of under 26% for men and 36% for women. Failing it leads to the Fitness Reconditioning Program. See the Air Force & Space Force waist chart and points →

Space Force

Guardians follow the Department of Defense limit of below 0.55. Follow-up assessments are set out in the Space Force's own manual, SPFMAN 36-2905. See the maximum waist for every height →

Marine Corps

Marines have the strictest limit: a ratio of 0.52 or below, measured at the navel. Above that, Marines get a body fat evaluation using the multi-site tape method or bioelectrical impedance, against age- and sex-based standards. Marines scoring 285 or higher on both the PFT and CFT get a body fat allowance, capped at 26% for men and 36% for women. Effective January 1, 2026. See the Marine Corps waist chart for every height →

Coast Guard

The Coast Guard is part of the Department of Homeland Security and does not use waist-to-height ratio. Starting with the October 2026 screening, members are checked against three standards in order: maximum allowable weight, maximum body fat, and maximum abdominal circumference. Passing any one is enough. Members who fail all three take a fitness test and must average a mark of 5 (Above Average).

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