Waist-to-Hip Ratio Calculator
Divide your waist by your hips and compare the ratio with the WHO cut-offs of 0.90 for men and 0.85 for women.
A screening measure only, not a diagnosis. Body shape varies with age, build and ethnicity — talk to a doctor about your own health.
About this tool
Measure your waist and hips, enter them in centimetres or inches and get your waist-to-hip ratio (WHR) — waist ÷ hips. The result is compared with the World Health Organization cut-offs for abdominal obesity (above 0.90 for men, above 0.85 for women), and your waist on its own is checked against the commonly used thresholds of 102 cm for men and 88 cm for women. A quick, tape-measure-only way to see where your body stores fat — something BMI does not show.
Frequently asked questions
Stand straight, breathe out normally and keep the tape snug but not tight. The WHO protocol measures the waist midway between the lowest rib and the top of the hip bone, and the hips around the widest part of the buttocks, with the tape parallel to the floor. Measure the same way every time.
The WHO defines abdominal obesity as a ratio above 0.90 for men and above 0.85 for women. A woman with an 80 cm waist and 100 cm hips has a WHR of 0.80, below the cut-off; a man with a 98 cm waist and 102 cm hips has 0.96, above it.
Fat around the abdomen is linked to a higher risk of heart disease and type 2 diabetes than fat on the hips and thighs. A waist of 102 cm (about 40 in) or more for men and 88 cm (about 34.6 in) or more for women is a widely used threshold for increased waist circumference.
They measure different things. BMI uses only height and weight, so it cannot tell muscle from fat or show where fat sits. WHR shows the fat distribution. Neither is a diagnosis — they are quick screening measures that work best together.
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