Waist-to-Hip Ratio (WHR) Calculator
Assess Central Fat Distribution, Evaluate Your Cardiovascular Risk
What's your biological sex?
What's your waist circumference?
What's your hip circumference?
About the Waist-to-Hip Ratio Calculator
The Waist-to-Hip Ratio (WHR) calculator measures the ratio of your waist circumference to your hip circumference, providing a direct indicator of fat distribution and associated health risk. Unlike BMI, which uses only weight and height, WHR distinguishes between android (apple-shaped) fat distribution — where fat accumulates centrally around the abdomen — and gynoid (pear-shaped) distribution, where fat is stored more around the hips and thighs. Central fat accumulation, reflected by a high WHR, is strongly associated with visceral fat — the metabolically active fat surrounding internal organs. Visceral fat secretes inflammatory compounds and hormones that drive insulin resistance, dyslipidemia, hypertension, and cardiovascular disease at a far greater rate than subcutaneous fat stored under the skin. The WHO recognizes WHR as a significant predictor of cardiovascular risk and metabolic disease. WHR is sex-specific because men and women naturally store fat differently due to hormonal influences. Women naturally have higher hip fat stores and thus have different healthy WHR thresholds than men. The measurement is simple, requires no equipment beyond a tape measure, and is particularly useful for screening individuals who may be at elevated cardiometabolic risk despite having a 'normal' BMI.
How your WHR is Calculated
WHR is calculated by dividing waist circumference by hip circumference: WHR = Waist (cm) ÷ Hip (cm). Measure your waist at the midpoint between the lower rib and the top of the iliac crest (hip bone) — this is typically at or slightly above the navel. Measure your hips at the widest point of the buttocks. WHO risk thresholds: For men — WHR < 0.90 is low risk, 0.90–0.99 is moderate risk, ≥ 1.00 is high risk. For women — WHR < 0.80 is low risk, 0.80–0.84 is moderate risk, ≥ 0.85 is high risk. These thresholds are established by the World Health Organization based on cardiovascular outcome research.
Frequently Asked Questions
For men, a WHR below 0.90 is considered low risk, and above 1.00 is high risk. For women, below 0.80 is low risk and above 0.85 is high risk. These WHO-established thresholds are based on population studies linking WHR to cardiovascular events and metabolic disease outcomes.
For cardiovascular and metabolic risk specifically, WHR is often considered more predictive than BMI. BMI cannot distinguish fat from muscle or abdominal fat from hip/thigh fat. Multiple large studies, including the INTERHEART study, have shown WHR to be a stronger predictor of heart attack risk than BMI, particularly in populations where BMI may underestimate central obesity.
Yes — while hip circumference is largely determined by bone structure and is difficult to change significantly, waist circumference is highly responsive to lifestyle changes. Aerobic exercise, resistance training, reduced refined carbohydrate intake, better sleep, and stress management all contribute to reduced visceral fat and a lower waist measurement, improving your WHR over time.
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