Governed under OPNAVINST 6110.1L CH-1 and Physical Readiness Program Guide-4 (June 2026 update, announced July 1, 2026), the Navy’s modern Body Composition Assessment (BCA) utilizes the single-site Waist-to-Height Ratio (WHtR) as the initial screening threshold for active duty and reserve personnel. This updated standard modernizes readiness evaluation to better reflect contemporary exercise physiology and combat fitness demands.
Why the Navy Modernized Preliminary Screening
For decades, service members with high muscular development frequently fell outside legacy height-weight screening tables, requiring secondary multi-site circumference measurements. The adoption of Waist-to-Height Ratio provides an objective, immediate biometric assessment that targets central abdominal adiposity rather than overall body mass.
To check your preliminary ratio against current screening guidelines, explore our interactive Navy BCA Calculator or read our Standards Overview.