What is a healthy waist-to-height ratio?

A WHtR below 0.5 is generally considered healthy for most adults, with higher ratios associated with increased risk of weight-related health conditions.

Why measure waist-to-height ratio instead of just BMI?

WHtR accounts for where fat is carried, and abdominal fat in particular is linked to higher health risk, so some researchers consider it a useful complement to BMI, which doesn't capture body shape.

Where should I measure my waist for this ratio?

Measure around the narrowest part of your torso, usually just above the belly button, with the tape snug but not compressing the skin.

Health & Fitness

Waist-to-Height Ratio Calculator

Enter your waist circumference and height to calculate your waist-to-height ratio (WHtR) and see its associated risk category.

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Enter your waist circumference and height above to calculate your ratio.

This result is an estimate for informational and educational purposes. It isn’t a diagnosis and isn’t a substitute for advice from a doctor, registered dietitian, or other qualified professional. See our methodology and sources for the formula used and its limitations.

How it works

Waist-to-height ratio divides waist circumference by height, giving a simple measure that some research suggests is a better indicator of central (abdominal) fat-related health risk than BMI alone, since it accounts for body shape.

Formula & methodology

WHtR = waist circumference ÷ height (same units). A ratio under 0.5 is generally considered healthy.

Worked example

A waist of 85 cm and height of 175 cm gives a WHtR of 0.49, in the "Healthy" range.

Important notes

—A widely cited rule of thumb is "keep your waist to less than half your height" — this calculator applies that same 0.5 threshold.
—WHtR focuses on abdominal fat distribution and complements, rather than replaces, BMI.