Waist-to-Height Ratio
Waist-to-height ratio (WHtR) is a simple, age- and sex-independent cardiometabolic risk screen. Rule of thumb: keep waist below half your height. Screening only; not a diagnosis.
Frequently asked questions
Why does waist-to-height ratio matter?
Waist reflects abdominal fat, which is especially relevant to cardiometabolic risk. WHtR screens this simply and independently of BMI. The rule “keep your waist below half your height” (ratio < 0.5) is widely used.
Does the 0.5 cutoff apply to all ages?
A key strength of WHtR is that the 0.5 cutoff works similarly across children, adolescents and adults, so no age-sex table is needed. Still, no single metric is diagnostic.
How should I measure the waist?
Usually at the navel level, on bare skin, while breathing out, without tightening the tape. Use the same technique each time for consistency.
My result is high — what now?
Take a health-focused approach: review balanced nutrition and active habits; avoid weight/appearance pressure. If it persists, consult a paediatrician or dietitian.