Waist-to-height ratio (WHtR) is increasingly used alongside or instead of BMI, since it accounts for where fat is stored rather than just total weight. The general guidance many clinicians use: keep your waist circumference under half your height.
Reference ranges: based on commonly cited clinical thresholds (below 0.5 generally considered healthy for most adults). This is a screening estimate, not a diagnosis, and doesn't account for muscle mass, pregnancy, or other individual factors. See our medical disclaimer.
Waist-to-height ratio vs BMI vs waist-to-hip ratio
Waist-to-height ratio (WHtR) has gained traction with researchers and clinicians as a simple, easy-to-remember screening tool: keep your waist circumference under half your height. Unlike BMI, it doesn't require a separate weight and height lookup table, and unlike waist-to-hip ratio, it only requires one additional measurement (your height, which most people already know). It's used as one of several body-composition and cardiometabolic risk indicators.
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Frequently asked questions
Does waist-to-height ratio work the same for men and women?
Unlike waist-to-hip ratio, most waist-to-height ratio guidance uses the same general threshold (around 0.5) for both sexes, which is part of its appeal as a simple screening rule — though individual variation still applies.
Is "keep your waist under half your height" actually accurate?
It's a simplified rule of thumb backed by several studies correlating waist-to-height ratio with cardiometabolic risk, but like any single metric, it doesn't capture everything — muscle mass, pregnancy, and individual body composition can all affect how meaningful the number is for a given person.
Should I use waist-to-height ratio or BMI?
They're complementary, not competing — BMI is simple and widely used but doesn't reflect fat distribution, while WHtR adds information about abdominal fat specifically. Many clinicians consider both alongside other health markers rather than relying on either alone.