Waist-to-Hip Ratio (WHR) Calculator
Enter waist and hip circumference to get WHR and central-obesity risk.
Input Data
Results
At a glance:WHR = waist ÷ hip. Central-obesity thresholds: men WHR > 0.90, women > 0.85 → elevated risk. riskLevel code: 0 = normal, 1 = elevated (central obesity).
Formula
WHR = waist ÷ hip.
male: WHR > 0.90 → risk 1; else 0.
female: WHR > 0.85 → risk 1; else 0.
How to Use
- Measure waist (narrowest or at navel level).
- Measure hip (widest point).
- Select sex.
- The tool returns WHR and risk level.
Case Studies
Female 85/95
WHR = 85 ÷ 95 = 0.89.
0.89 > 0.85 → risk 1 (central obesity).
FAQ
WHR or BMI, which is better?
They are complementary. BMI shows overall size; WHR shows fat distribution. At the same BMI, more abdominal fat means higher cardiovascular risk, which WHR captures.
Where to measure the waist?
Standard is the midpoint between lower ribs and pelvis (about navel level), at the end of a normal breath. Do not use trouser waist or suck in.
Why different thresholds by sex?
Women normally store more fat on hips/thighs, so the central-obesity threshold is stricter (0.85); men store fat around the abdomen, threshold 0.90. This reflects physiology.
High WHR but normal BMI?
Called 'normal-weight central obesity', still elevated risk. Add aerobic and core training, control refined sugar and alcohol, and monitor blood pressure and lipids.
Accurate for pregnancy or athletes?
Hip changes in pregnancy make it unsuitable; athletic glutes can lower WHR. This tool is a general adult screen; assess special builds holistically.
What does the risk code mean?
0 = normal (below threshold), 1 = elevated (reaches male 0.90 / female 0.85). A numeric marker for charts.
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References
Content review: Calculatorism Science Team. Results are for reference only; please refer to the relevant authorities for the official figures.