A modern marker of cardiometabolic risk.
Stand relaxed, keep the tape horizontal, exhale normally, and do not compress the skin. Averaging three measurements helps consistency.
A ratio between 0.40 and below 0.50 sits within the widely-cited "keep your waist to less than half your height" band. In population studies this range is associated with a lower observed cardiometabolic risk.
| Category | Range |
|---|---|
| Slim | < 0.40 |
| Healthy | < 0.50 |
| Increased risk | < 0.60 |
| High risk | ≥ 0.60 |
Body MeasurementsBMI is a starting point, not a verdict. Here is how to interpret it with body fat %, waist-to-height and lifestyle context.
Body MeasurementsA tape measure and one ratio reveal more about your metabolic risk than the bathroom scale ever could.
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The waist-to-height ratio (WHtR) compares waist circumference with height. A widely-cited practical target for most adults is a ratio below 0.50 — the "keep your waist to less than half your height" heuristic supported by the Ashwell shape chart and cited in NICE guidance. It is a screening ratio only; it does not diagnose any condition.
Use the result as one signal alongside blood pressure, blood tests and how you feel — not as a stand-alone health verdict. If the ratio is above 0.50, consider small consistent changes to daily movement, sleep, hydration and dietary fibre. A ratio at or above 0.60 is a reasonable prompt to discuss the result and a routine cardiometabolic check with a qualified healthcare professional.
This is a screening ratio, not a diagnosis. It does not replace blood pressure, blood tests, clinical history or professional assessment.
A ratio between 0.40 and below 0.50 sits within the widely-cited "keep your waist to less than half your height" band. In population studies this range is associated with a lower observed cardiometabolic risk.
Routine check-ups remain valuable — waist-to-height ratio is one signal, not the whole picture.