What is the Waist-to-Height Ratio?
Beginning 1 March 2026, the Air Force replaced the legacy abdominal circumference tape test with the Waist-to-Height Ratio (WHtR) as the sole body composition metric. WHtR is a simple ratio that divides your waist circumference by your height, both measured in inches.
A WHtR of 0.50 or lower earns maximum points. Research supports WHtR as a better predictor of cardiovascular risk than BMI or waist circumference alone, making it a more holistic fitness measure.
2026 WHtR Scoring Tiers
| WHtR Range | Risk Category | Points Awarded | Notes |
|---|---|---|---|
| ≤ 0.50 | Low Risk | 20 pts (Maximum) | Full score — top-tier body composition |
| 0.51 – 0.59 | Moderate Risk | Scaled 1–19 pts | Linear interpolation between 0.50 and 0.60 |
| ≥ 0.60 | High Risk | 0 pts | Component failure regardless of composite score |
How to Measure Your Waist Circumference
Per DAFMAN 36-2905, the waist is measured at the natural waist — the narrowest point of the torso, approximately one inch above the navel. Measurement is taken at the end of a normal exhale with feet together.
Stand upright with feet together and abdomen relaxed.
Locate the natural waist — the narrowest point, ~1 inch above the navel.
Wrap the tape snugly (not compressing skin) and record at end of normal exhale.
How to Improve Your WHtR Score
A modest 300–500 calorie daily deficit loses 0.5–1 lb/week without impacting PT performance.
High sodium causes water retention around the midsection. Cut processed foods 1–2 weeks before your test.
Planks, dead bugs, and anti-rotation exercises tighten the transverse abdominis without spot-reducing fat.
3–5 sessions of moderate cardio per week accelerates fat loss in combination with diet.
Related Articles — USAF PT Reference Guides
Try the Free USAF PT Score Calculator
Instant scoring for all 2026 PFRA components — strength, core, cardio & body composition.
★ Open the Calculator