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Waist-to-Height Ratio Calculator

Where fat sits matters more to the liver than how much you weigh. Waist-to-height ratio is the simplest way to capture that at home.

Measure around the narrowest point between your lowest rib and hip bone, at the end of a normal breath out.
The ratio is unit-free — just measure both the same way.
Waist-to-height ratio

Why waist, not weight

Fat stored around the abdomen and inside the organs behaves very differently from fat under the skin of the hips and thighs. It is the visceral kind that tracks with liver fat and insulin resistance — which is why someone with a “normal” BMI and a large waist can still have a fatty liver.

Waist-to-height ratio captures that in one number and needs nothing but a tape measure. The widely used rule of thumb is to keep your waist to less than half your height, which is a ratio below 0.5. UK national guidance on obesity assessment recommends it alongside BMI for exactly this reason.

RatioCommonly described as
Below 0.5Healthy central fat distribution
0.5 – 0.59Increased central adiposity
0.6 and aboveHigh central adiposity

The 0.5 boundary is not intended for children under about five, for pregnancy, or for people who are very muscular.

Before you act on this

FattyFix publishes general health information. It is not medical advice, it is not a diagnosis, and it is not a substitute for talking to a doctor, pharmacist or dietitian who knows your history. Never delay or stop treatment because of something you read here.

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