US Army rules are explicitly selected by this page, never inferred from your location. Rules checked 11 October 2026. Official records and measurement staff control the assessment.
How to use this army waist-to-height ratio calculator
For current Army ABCP screening. Use a recorded average, or enter three consistent navel readings. The updated DA Form 5500 is a waist-to-height worksheet, not a body-fat percentage formula.
How the calculation works
Under Army Directive 2026-13, the ABCP uses waist-to-height ratio instead of the former height/weight and body-fat tape-test workflow. Measure waist at the navel, with a level non-stretch tape that does not compress the skin. Measure height in socks, without shoes.
Record height to the nearest 0.5 inch. For three consistent readings, record each waist down to the nearest 0.5 inch, then average to three decimals as instructed on DA Form 5500 (JUL 2026). This calculator rounds that recorded average to three decimals, then truncates waist ÷ recorded height to three decimals.
If the entered recorded readings span more than 1 inch, this tool stops the three-reading estimate. Have the measurement team repeat and resolve the readings under Annex A, then enter its confirmed average in Recorded average mode. The repeat-measurement averaging procedure is not automated here.
A recorded ratio of 0.549 is below the standard; 0.550 is not. A high initial ratio requires another team’s same-duty-day confirmation before administrative action. This calculator does not determine exemptions, enrollment, accession eligibility or AFT/CFT scores.
The displayed waist limit is the largest half-inch grid value strictly below 0.55 × recorded height, matching the Annex A lookup convention. Three-reading averages can fall between half inches; the exact exclusion boundary is also shown. It is not valid to round 0.55 × height to the nearest half inch and call it passing.
Worked example
At 72 inches of recorded height and 39.5 inches of recorded average waist, 39.5 ÷ 72 = 0.548611… records as 0.548 and is below 0.550. At 70 inches and 38.5 inches, the ratio is exactly 0.550 and needs confirmation.
Limits and assumptions
Independent planning estimate for the Army ABCP WHtR rule. Not an official DA Form 5500, body-fat percentage, medical diagnosis, enlistment decision, or full AFT/CFT score. Exemptions and repeated/outlier measurements require the official procedure and trained assessors.
Frequently asked questions
Why is this different from a general waist-to-height calculator?
Army measurement and recording rules matter. The Army uses the navel and truncates the ratio to 3 decimals. General adult health bands cannot replace these service rules.
Can I enter centimeters or feet and inches?
Yes. Use the page’s units selector for centimeters, or enter total inches or a height such as 6 ft 0 in. The tool converts the values before applying the official inch-based recording increments.
Do I need weight, age or sex?
Those inputs are not part of this WHtR formula. This tool does not estimate body-fat percentage. Army medical exemptions and enlistment standards are separate questions.
Why did the tape-reading calculation stop?
Measurements differing by more than an inch need the official repeat-measurement procedure. The calculator preserves your entries. After the measurement team resolves the readings, switch to Recorded average waist and enter its value.
Is the limit a recommendation to lose weight?
No. It is an arithmetic boundary for a recorded test measurement, not a personal health or weight-loss recommendation. Discuss individual health questions with a qualified clinician.
References
US Army: current ABCP policy and standard