Waist to Hip Ratio Calculator
Measure your waist and hips, and we calculate your ratio and what it suggests about your health risk.
This calculator gives general estimates for information only. It is not medical advice and does not replace a consultation with a doctor or other qualified health professional.
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The formula
Waist-to-hip ratio = waist circumference / hip circumference.
Why it matters
Where you carry fat matters as much as how much. Fat around the middle is linked to a higher risk of heart disease and type 2 diabetes than fat on the hips and thighs, and waist-to-hip ratio picks that up where BMI does not.
What the numbers mean
| Risk | Women | Men |
|---|---|---|
| Low | Under 0.80 | Under 0.90 |
| Moderate | 0.80 to 0.85 | 0.90 to 1.00 |
| High | Above 0.85 | Above 1.00 |
The WHO treats a ratio above 0.85 for women and 0.90 for men as abdominal obesity.
How to measure
Stand up straight and relaxed. Measure the waist at the narrowest point between the ribs and hips, or the navel if that is hard to find, and the hips at the widest part of your buttocks. Use the same units for both.
Example
A waist of 80 cm and hips of 100 cm give 0.80. For a woman that sits at the border of low and moderate risk.
Examples to check
Type these into the calculator above to see how it behaves. Every result below was produced by the same calculator code that runs on this page.
| What you enter | What you get |
|---|---|
| Female; Waist (cm): 80; Hip (cm): 100 | Waist-to-hip ratio: 0.8 |
| Male; Waist (cm): 95; Hip (cm): 100 | Waist-to-hip ratio: 0.95 |
| Female; Waist (cm): 90; Hip (cm): 98 | Waist-to-hip ratio: 0.92 |
Waist to Hip Ratio Calculator: frequently asked questions
Is waist alone enough?
Waist size on its own is also a useful indicator. Many health bodies flag more than 94 cm (men) or 80 cm (women) as increased risk.
Can I rely on this result as medical advice?
No. It is a general estimate for information only. It cannot replace a check-up, and your doctor can interpret the numbers for your own situation.
Is what I enter in this calculator saved or sent anywhere?
No. The calculation runs in your browser, so what you enter is not sent to our servers. We only count, anonymously, whether a tool ran successfully.
Is this calculator free to use?
Yes. It is free, needs no sign-up and has no usage limit.
Last reviewed: October 3, 2026