Health Calculator

Waist-Hip Ratio Calculator

Calculate your waist-to-hip ratio (WHR) with WHO cardiovascular and metabolic risk classification. A stronger predictor of heart disease risk than BMI alone — because where you carry fat matters as much as how much you carry.

WHO classification Sex-specific thresholds PDF & CSV export
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Waist-Hip Ratio
WHO uses sex-specific risk thresholds for WHR.
cm
Measure at the narrowest point between ribs and hips, after a normal exhale. Please enter a valid waist measurement.
cm
Measure at the widest point around your buttocks and hips. Please enter a valid hip measurement.
📏 Waist Measurement
  1. Stand upright, feet shoulder-width apart
  2. Find the point midway between your lower ribs and hip bones
  3. Exhale normally — do not suck in
  4. Wrap tape horizontally, snug but not tight
📏 Hip Measurement
  1. Stand with feet together
  2. Find the widest point of your buttocks/hips
  3. Keep tape horizontal and parallel to the floor
  4. Tape should be snug, not compressing skin
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Your Result
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WHO risk thresholds for your sex:

Your measurements:

Waist
cm
Hip
cm
WHR
Waist ÷ Hip
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What Is Waist-Hip Ratio (WHR)?

Waist-hip ratio is the numerical ratio of waist circumference to hip circumference. It is a simple, cost-free measurement that quantifies the distribution of body fat — specifically, the degree of central (abdominal) adiposity relative to peripheral (hip and thigh) fat.

Unlike BMI, which only measures weight relative to height, WHR distinguishes between two fundamentally different fat distribution patterns with very different health consequences: android (apple-shaped) fat distribution, where fat accumulates around the abdomen, and gynoid (pear-shaped) distribution, where fat accumulates around the hips and thighs.

WHO Risk Classification

Risk LevelMen (WHR)Women (WHR)Associated Risks
Low Risk< 0.90< 0.80Low cardiovascular and metabolic risk
Moderate Risk0.90–0.990.80–0.84Moderately increased risk of CVD, T2DM
High Risk≥ 1.00≥ 0.85Significantly elevated risk; clinical evaluation warranted

Why WHR Is a Better CVD Predictor Than BMI

The INTERHEART study (2004), involving 27,000 participants across 52 countries, found that WHR was a substantially stronger predictor of myocardial infarction (heart attack) risk than BMI across all regions, ethnic groups, and both sexes. Visceral (intra-abdominal) fat — which correlates with waist circumference — is metabolically active tissue that promotes insulin resistance, dyslipidaemia, inflammation, and hypertension through release of pro-inflammatory cytokines and free fatty acids.

Waist Circumference Alone

Waist circumference alone is also a validated cardiovascular risk marker:

PopulationIncreased RiskSubstantially Increased Risk
Men (European)≥ 94 cm (37 in)≥ 102 cm (40 in)
Women (European)≥ 80 cm (31.5 in)≥ 88 cm (35 in)
South Asian / Chinese men≥ 90 cm
South Asian / Chinese women≥ 80 cm

Frequently Asked Questions

What is a good waist-hip ratio for women?+
For women, a WHR below 0.80 is considered low risk by WHO guidelines. A ratio between 0.80 and 0.84 indicates moderate risk, and 0.85 or above indicates high risk of cardiovascular and metabolic disease. These thresholds are lower than for men because women naturally store more fat in the hips and thighs; a higher WHR in women indicates a greater degree of abnormal abdominal fat accumulation relative to their body type.
Can I reduce my waist-hip ratio?+
Yes — waist-hip ratio responds well to lifestyle modification. Aerobic exercise is particularly effective at reducing visceral abdominal fat. Resistance training builds hip and thigh muscle, improving the ratio from both ends. Dietary changes that reduce overall energy intake and limit refined carbohydrates have been shown to preferentially reduce visceral fat. Even modest weight loss of 5–10% of body weight produces clinically meaningful reductions in waist circumference and WHR.
Should I use WHR or BMI to assess my health risk?+
Use both — they measure different things. BMI screens for overall weight-related health risk. WHR specifically assesses cardiovascular and metabolic risk from fat distribution. Someone with a normal BMI can have a high WHR (normal-weight central obesity), while a muscular athlete may have a high BMI but a healthy WHR. Together, BMI and WHR provide a more complete picture than either measure alone. Waist circumference can also be used independently as a simpler proxy for central obesity.
Is WHR accurate for all ethnic groups?+
The standard WHO thresholds (0.90 male / 0.85 female) were derived largely from Western populations. South Asian, East Asian, and other ethnic groups develop cardiovascular risk at lower BMI and waist circumference values. Some guidelines recommend lower waist circumference thresholds for these populations. The IDF (International Diabetes Federation) provides ethnicity-specific waist circumference cut-offs. WHR itself remains a useful metric across populations, but risk thresholds may need local calibration.

Related Tools

Combine WHR with BMI Calculator for a complete body composition risk assessment. For cardiovascular disease risk beyond body measurements, see Framingham Risk Score. For body fat percentage, see Body Fat Percentage Calculator.

References

  • World Health Organization. Waist Circumference and Waist-Hip Ratio: Report of a WHO Expert Consultation. WHO Press, 2008.
  • Yusuf S, et al. "Obesity and the risk of myocardial infarction in 27,000 participants from 52 countries: a case-control study (INTERHEART)." Lancet. 2005;366(9497):1640-1649.
  • Alberti KG, et al. "Harmonizing the metabolic syndrome." Circulation. 2009;120(16):1640-1645.
⚠️ Medical Disclaimer: Waist-hip ratio is a screening tool only. A high WHR should prompt discussion with a healthcare professional, not self-diagnosis. Always consider WHR alongside other cardiovascular risk factors including blood pressure, cholesterol, blood glucose, smoking status, and family history.
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