Waist-to-Hip Ratio Calculator
Calculate your waist-to-hip ratio (WHR) and assess cardiovascular health risk based on WHO guidelines.
Why Waist-to-Hip Ratio Beats BMI for Health Risk
BMI tells you if you weigh too much. Waist-to-hip ratio tells you where you carry that weight — and that's what actually matters for heart disease, diabetes, and early death.
A 2011 study in The Lancet involving 221,934 participants across 17 countries found that WHR predicted cardiovascular events better than BMI alone. Someone with a "normal" BMI but high WHR (apple-shaped body) has a higher risk than someone with a high BMI but low WHR (pear-shaped body).
The reason is visceral fat — the fat that wraps around your internal organs in the abdominal cavity. Unlike subcutaneous fat (the kind you can pinch), visceral fat is metabolically active: it releases inflammatory compounds, raises blood pressure, and increases insulin resistance. WHR is the simplest way to estimate whether you carry too much of it.
WHO Risk Classifications
The World Health Organization defines cardiovascular risk thresholds based on waist-to-hip ratio. These thresholds differ between men and women because body fat distribution is sex-dependent.
| Risk Level | Men (WHR) | Women (WHR) | Health Implications |
|---|---|---|---|
| Low Risk | < 0.90 | < 0.80 | Healthy fat distribution, lower disease risk |
| Moderate Risk | 0.90–0.99 | 0.80–0.85 | Some central fat accumulation, monitor closely |
| High Risk | ≥ 1.00 | > 0.85 | Significant visceral fat, elevated disease risk |
What this means for you: If your WHR puts you in the moderate or high category, the priority is reducing waist circumference through a calorie deficit and regular exercise — particularly aerobic exercise, which preferentially reduces visceral fat. Strength training helps too, but you can't spot-reduce fat from your waist with ab exercises.
How to Measure Correctly
Waist Measurement
Stand up straight and breathe out normally. Wrap the tape around your bare waist at the narrowest point — typically midway between the bottom of your ribs and the top of your hip bones, roughly at your belly button. The tape should be snug but not compressing the skin.
Hip Measurement
Wrap the tape around the widest part of your buttocks/hips. Stand with your feet together and ensure the tape is level all the way around. Don't pull the tape too tight — it should sit flat against your body without digging in.
Tips for accuracy: Use a flexible measuring tape (not a metal ruler). Measure on bare skin or over very thin clothing. Take 3 measurements and use the average. Measure at the same time of day for tracking purposes — morning before eating is ideal. Don't hold your breath or suck in your stomach.
WHR vs BMI vs Waist Circumference
| Metric | What It Measures | Strengths | Limitations |
|---|---|---|---|
| BMI | Weight relative to height | Simple, widely understood | Ignores fat distribution and muscle |
| WHR | Fat distribution (apple vs pear) | Best predictor of heart disease | Requires two measurements |
| Waist Circumference | Abdominal fat only | Simplest single measure of visceral fat | Doesn't account for body frame |
Bottom line: Use all three. BMI gives a general weight status. WHR tells you whether your fat distribution is dangerous. Waist circumference alone (men > 102cm, women > 88cm) is a quick red flag. Together, they paint a much clearer picture than any single number. Check your BMI with our BMI Calculator.
Related Health Tools
How to use this tool
Measure your waist at the narrowest point above your belly button
Measure your hips at the widest point around your buttocks
Enter both measurements and select your gender
Common uses
- Assessing cardiovascular disease risk
- Tracking body fat distribution changes
- Complementing BMI for health screening
- Monitoring abdominal fat reduction
- Evaluating metabolic syndrome risk
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