Waist-to-hip ratio calculator
Compare the size of your waist with your hips and see where you sit against the WHO thresholds.
Your waist-to-hip ratio
Enter your measurements, then calculate.
How the ratio works
The WHO consultation describes a ratio above 0.90 for men and above 0.85 for women as a sign of substantially increased metabolic risk. It also lists waist circumference cut-offs on their own.
| Waist circumference | Men | Women |
|---|---|---|
| Increased risk | 94 cm or more | 80 cm or more |
| Substantially increased risk | 102 cm or more | 88 cm or more |
Worked example
A man has a waist of 94 cm and hips of 102 cm. Ratio = 94 ÷ 102 = 0.922, shown as 0.92. That is above the 0.90 threshold. His waist of 94 cm is also in the “increased risk” waist band. Choose Male, enter 34, 94 and 102 above to see the same result.
How to measure
- Waist: halfway between the lowest palpable rib and the top of the hip bone, after a normal breath out.
- Hip: the widest part of the hips and buttocks, with feet together.
- Keep the tape level and snug but not squeezing. Use the same unit for both.
Limits
The ratio is a population screening measure. It does not diagnose anything, hip shape and bone structure vary, and a larger hip measurement can lower the ratio without changing waist size. Waist-to-height ratio, on the sister page, avoids that quirk.
Who this tool is for
This tool is for healthy adults aged 20 and older. It is not for use during pregnancy or breastfeeding, and it does not diagnose any condition, suggest medicine doses, set weight-loss targets or write personal meal plans. If you have a medical condition, or a result worries you, speak to a doctor or registered dietitian.
Your numbers stay in your browser. They are not sent anywhere, saved, or added to the page address. See our privacy policy.
Sources
See the editorial methodology for how we check sources.