How waist-to-hip ratio calculator works
The waist-to-hip ratio (WHR) compares the circumference of your waist to the circumference of your hips: divide one by the other, measured in the same unit. It describes where your body stores fat rather than how much you weigh. Fat concentrated around the abdomen (an 'apple' or android pattern, higher ratio) is metabolically more active and more strongly linked to heart disease and type 2 diabetes than fat stored around the hips and thighs (a 'pear' or gynoid pattern, lower ratio).
The World Health Organization defines raised-risk cutoffs that differ by sex. For men, a ratio below 0.90 is low risk, 0.90 to 0.99 is moderate risk, and 1.00 or above is high risk. For women, below 0.80 is low risk, 0.80 to 0.84 is moderate risk, and 0.85 or above is high risk. This calculator applies those bands, labels your fat-distribution pattern as apple or pear, and reports the exact cutoffs so you can see how far you are from each boundary.
Measure your waist at the midpoint between the bottom of your ribs and the top of your hip bone, and your hips at the widest point around your buttocks, keeping the tape level and snug without compressing the skin. Take both readings after a normal breath out. Because the two measurements are divided by each other, the ratio is the same whether you use centimetres or inches — the unit selector is there for consistency only.