Waist-to-Hip Ratio
Calculate your waist-to-hip ratio to assess cardiovascular disease risk and fat distribution.
About Waist-to-Hip Ratio
WHR measures whether you carry more fat around the waist (apple shape, higher risk) or hips (pear shape, lower risk). The WHO considers WHR >0.90 (men) or >0.85 (women) a significant cardiovascular risk factor.
Accuracy WHR is a validated predictor of cardiovascular disease risk in major epidemiological studies. Measurement accuracy depends on correct tape placement โ measure at the natural waist (narrowest point between ribs and navel) and at the widest part of the hips. Poor technique can introduce ยฑ0.02โ0.05 WHR error, which can shift risk categories. Measure three times and average for best results.
Risk Classification (WHO)
| Risk Level | Men | Women |
|---|---|---|
| Low Risk | < 0.90 | < 0.80 |
| Moderate Risk | 0.90 โ 0.99 | 0.80 โ 0.84 |
| High Risk | โฅ 1.00 | โฅ 0.85 |
What to do with your result
- If high risk (WHR โฅ0.90 for men, โฅ0.85 for women): prioritize reducing abdominal fat through aerobic exercise (at least 150 minutes/week) and a moderate calorie deficit. Visceral fat responds well to cardio โ even a 5โ10% reduction in waist circumference meaningfully lowers cardiovascular risk.
- Track waist circumference monthly (not just WHR) since waist reduction is the direct goal. A 1 cm reduction in waist size is clinically meaningful.
- Also check your Waist-to-Height Ratio โ the target is to keep your waist below half your height, regardless of gender.
- If in moderate or high risk: discuss results with your doctor, especially if you also have elevated blood pressure, blood sugar, or cholesterol.
Frequently Asked Questions
How accurate is the waist-to-hip ratio as a health measure?
WHR is a well-validated predictor of cardiovascular disease risk and has outperformed BMI in large prospective studies for predicting heart attack risk. However, it measures fat distribution, not total body fat. Its accuracy depends heavily on correct tape placement โ use the narrowest waist point and widest hip point. Measure three times and average for best results.
What should I do if I am in the high-risk WHR category?
High WHR indicates excess visceral (abdominal) fat, which is metabolically active and drives inflammation, insulin resistance, and cardiovascular risk. Prioritize aerobic exercise (150+ minutes of moderate cardio per week), reduce processed carbohydrates and alcohol, and aim for a moderate calorie deficit. Consult a doctor if your WHR is significantly above the high-risk threshold or you have other risk factors.
How often should I remeasure my WHR?
Remeasure every 4โ8 weeks when actively trying to reduce waist circumference. Take measurements first thing in the morning before eating, standing relaxed, with the tape parallel to the floor. Morning measurements before eating minimize variation from food and bloating. Three readings averaged together reduce measurement error.
Is WHR better than BMI for predicting health risk?
For cardiovascular disease risk specifically, WHR is generally a stronger predictor than BMI. BMI cannot distinguish between fat and muscle, and it cannot identify where fat is stored. WHR directly captures central (abdominal) obesity, which is more metabolically harmful than subcutaneous fat stored in the hips and thighs. Using both together gives a more complete picture than either alone.
Does WHR change with age, and how does it affect older adults?
Yes. As people age, fat tends to redistribute toward the abdomen even if total body weight stays stable. Hormonal changes โ especially the drop in estrogen after menopause โ accelerate abdominal fat accumulation in women. This makes WHR particularly important to monitor in people over 50. Age-related increases in WHR are not inevitable โ regular exercise and a healthy diet can maintain favorable fat distribution well into older age.
This calculator is for educational purposes only. Consult a qualified healthcare professional for medical advice.