Waist-to-hip ratio calculator
The ratio shows fat stored around the belly, which is tied to heart disease and diabetes risk more closely than weight alone.
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How to use it
- Enter sex, waist and hip.
- The result appears straight away and updates as you edit.
- Copy the result, or copy a link that keeps the same values to share it.
How it is calculated
Ratio = waist ÷ hip, in the same unit. WHO treats 0.90 or more for men and 0.85 or more for women as substantially increased risk.
Example
Inputs: Sex = Male, Waist = 85 cm, Hip = 95 cm. Result: Waist-to-hip ratio: 0.89; WHO assessment: Below the cut-off; Cut-off for your sex: 0.9.
Limits and caveats
- Measure the waist midway between the lowest rib and the top of the hip bone, and the hips at the widest point.
- The cut-offs are for adults and do not apply in pregnancy.
Questions about this tool
What is a healthy waist-to-hip ratio?
Under 0.90 for men and under 0.85 for women, per the WHO.
Should I measure in cm or inches?
Either, as long as both measurements use the same unit; the ratio has no unit.
Why does it matter more than weight?
Belly fat is more closely linked to insulin resistance and heart disease than fat stored elsewhere.