Waist-to-Height Ratio (WHtR)
Waist circumference divided by height — the metric the U.S. military adopted as its joint-force body-composition screen on January 1, 2026.
Data updated: 2026-08-20 (verified vs primary service regulations)
Formula
WHtR = waist (in) ÷ height (in)
Healthy range
General health: below 0.5 is ideal; 0.5–0.59 signals increased cardiometabolic risk. Military: the 2026 gate is < 0.55 (Marine Corps < 0.52).
Military & first-responder angle
The DoD replaced height-and-weight tables with WHtR effective 2026-01-01. At or above 0.55 triggers a secondary body-fat evaluation. This is now the most consequential single number in military body composition.
Calculator
The 2026 Department of Defense primary screen: waist ÷ height. Under 0.55 clears the joint-force screen; the Marine Corps sets a tighter 0.52.
Result
About this calculator
Waist-to-height ratio (WHtR) is a single-number estimate of abdominal fat and the health risk that comes with it. You divide waist circumference by height, both in the same units.
The formula
WHtR = waist ÷ height. A value under 0.50 is generally associated with lower cardiometabolic risk; the 2026 U.S. DoD screen uses 0.55 and the Marine Corps 0.52.
Frequently asked questions
Q: What WHtR clears military screens?
A: Below 0.55 passes the DoD primary screen; below 0.52 also clears the tighter Marine Corps line, with no tape test required.
Q: Why waist instead of BMI?
A: Waist captures central fat, which tracks heart and metabolic risk better than weight-for-height alone.
Q: Do cutoffs differ by sex?
A: The ratio thresholds are close for men and women; the 0.52 and 0.55 lines apply across the joint force.
How to read the result
The ratio is deliberately blunt, which is what makes it usable as a first screen. It needs no scale, no equipment beyond a tape, and no interpretation of body shape, so two people measuring the same waist at the same height reach the same conclusion. That simplicity is why the joint force adopted it in January 2026 in place of height-and-weight tables, which had the awkward property of penalising muscular people while passing others who carried their weight centrally.
The measurement is where most disagreements happen. The tape goes around the bare waist at the level of the navel, parallel to the floor, snug against the skin without compressing it, and the reading is taken at the end of a normal exhale rather than a held breath. Repeating the measurement and averaging removes most of the variation. When the number lands close to the line, that difference in technique is the difference between passing the screen and being sent to a tape test, so measure the same way every time.
Quick answers
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