Waist-to-hip ratio is a simple measurement some health organizations use alongside BMI, since it reflects where body fat is distributed — which research links to health risk more directly than weight alone in some contexts.
Waist-to-Hip Ratio Calculator
LiveThe formula
A 34-inch waist and 40-inch hip: 34 ÷ 40 = 0.85.
WHO reference ranges
| Sex | Lower-risk range | Higher-risk range |
|---|---|---|
| Men | Below 0.90 | 0.90 and above |
| Women | Below 0.85 | 0.85 and above |
Step-by-step guide
- Measure your waist at its narrowest point, usually just above the belly button.
- Measure your hips at their widest point.
- Enter both measurements in the same unit and read your ratio and category.
Common mistakes
Frequently asked questions
Is this better than BMI?
They measure different things — BMI relates weight to height, while waist-to-hip ratio reflects fat distribution. Some research suggests fat distribution matters for certain health risks, so the two are often considered complementary rather than one replacing the other.
Why does fat distribution matter?
Fat stored around the abdomen is associated with different health considerations than fat stored elsewhere in some research, which is part of why this ratio is used alongside other measurements rather than alone.
Should I be concerned about a single measurement?
A single number is a starting point, not a diagnosis. If you have concerns about your ratio or overall health risk, a healthcare provider can interpret it alongside your full health picture.
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