Navy body fat calculator for the June 2026 BCA: run the two-step waist-to-height and body-fat table check with Navy rounding and the 26% and 36% limits.
Step 1 uses waist divided by height. Height rounds up and waist rounds down to half-inch increments. The ratio is truncated to four decimals. A value below 0.5500 is within Step-1 standards; otherwise the tool looks up body fat using weight and height-minus-waist.
Step-2 limits are 26% for males and 36% for females. Values outside the published table require PRIMS, not an extrapolated formula. This current process supersedes older neck-and-waist tape workflows. Score fitness separately in the Navy PRT calculator, and compare other services in the waist-to-height ratio calculator.
Source: Navy PRP Guide-4 Body Composition Assessment, June 2026 · Effective 2026-06-01 · Checked 2026-10-29
The June 2026 guide uses a waist-to-height first step with a strict less-than-0.55 standard. When needed, the second step uses the published sex-specific body-fat table based on weight and the height-minus-waist value. This replaces the older three-step description; a neck measurement is not part of the implemented current workflow.
The Navy procedure rounds height up to a half inch and waist readings down to a half inch, then applies its stated repeat-and-average procedure. The ratio truncates to four decimals. Army uses different height and averaging instructions, so copying an Army recorded measurement into the Navy workflow can change a boundary result.
A weight or height-minus-waist combination can fall outside the published matrix imported here. The calculator does not extrapolate body-fat percentages beyond those cells. It identifies the need for an official PRIMS lookup instead. A missing table value should not be treated as either automatic compliance or automatic failure.
If the readings differ by more than one inch, the guide calls for a third reading and the closest pair is used in the recording process. The form reveals the extra field when necessary. Re-measure using the required technique; do not edit a value simply to force a preferred screen outcome.