DocomintWaist-to-Hip Ratio Calculator
Calculate waist-to-hip ratio and health risk category from waist and hip measurements.
Waist-to-hip ratio is a simple indicator of where body fat is concentrated — fat carried around the waist ('apple' shape) is associated with higher cardiovascular risk than fat carried at the hips ('pear' shape) at the same total body weight, which is why the WHO tracks this ratio alongside BMI rather than as a replacement for it.
Example: A waist of 85cm and hip of 100cm gives a ratio of 0.85 — for a woman, that falls right at the boundary between the WHO's "moderate risk" and "high risk" bands, while the same 0.85 ratio would read as "low risk" for a man, since the thresholds differ by gender.
How it works
- Enter your gender, waist circumference, and hip circumference
- Press Calculate
- Your waist-to-hip ratio and WHO risk category appear instantly, computed on your device
Frequently asked questions
What waist-to-hip ratio is considered healthy?
The WHO generally considers below 0.90 low risk for men and below 0.80 low risk for women, with risk increasing above those thresholds — though like BMI, it's a screening indicator, not an individual diagnosis.
Why do risk thresholds differ by gender?
Men and women naturally carry fat in different distribution patterns on average, so the same numeric ratio doesn't carry the same health implication across genders — the WHO's thresholds were set separately based on population health outcome data for each.
Is my numbers uploaded anywhere?
No — Waist-to-Hip Ratio Calculator runs entirely in your browser using JavaScript/WebAssembly. Your numbers is never sent to a server.