Waist-to-Hip Ratio Calculator
Your waist-to-hip ratio is a quick marker of fat distribution and cardiometabolic risk. Enter your measurements to see your ratio against the WHO risk thresholds.
Where you land
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Learn moreWhy waist-to-hip ratio matters
Waist-to-hip ratio captures where you carry fat, which matters for health beyond overall weight. Fat concentrated around the abdomen (a higher ratio, the apple shape) is linked to greater heart-disease and diabetes risk than fat on the hips and thighs. The World Health Organization flags substantially increased risk at 0.90+ for men and 0.85+ for women.
How it’s calculated & sources
Ratio = waist circumference divided by hip circumference (same units). Measure the waist at the narrowest point and hips at the widest. Compared to WHO risk thresholds by sex.
Benchmark: WHO waist-to-hip ratio risk cut-offs of 0.90 or higher for men and 0.85 or higher for women indicate substantially increased cardiometabolic risk.
Results update as you type and are general estimates, not personalized advice. Verify with a professional.
Worked example
A man with a 34-inch waist and 40-inch hips has a ratio of 0.85 — below the 0.90 male threshold, in the lower-risk range.
Frequently asked questions
How do I measure correctly?
Measure the waist at its narrowest (usually just above the navel) and the hips at their widest, keeping the tape level and snug but not compressing skin.
Is waist-to-hip better than BMI?
It adds information BMI misses (fat distribution) and predicts cardiometabolic risk well. Use both together.
What if I am above the threshold?
It is one risk marker, not a diagnosis. Losing abdominal fat through diet and activity lowers the ratio; discuss concerns with a clinician.