Waist-to-Hip Ratio Calculator
Find your waist-to-hip ratio and cardiovascular risk category per WHO thresholds.
Waist-to-Hip Ratio Calculator — your inputs
- Sex
- Male
- Waist
- 80 cm
- Hip
- 100 cm
- Unit system
- Metric
Key takeaways
- Waist-to-hip ratio measures where fat sits, which BMI cannot see and which predicts cardiovascular risk independently.2
- WHO thresholds: 0.90 for men, 0.85 for women. Above that is classified as abdominal obesity.1
- In the 52-country INTERHEART study, waist-to-hip ratio predicted heart attack risk better than BMI did.2
- The mechanism is visceral fat — fat packed around the organs, which is metabolically active in ways subcutaneous fat is not.4
- It takes thirty seconds and a tape measure, and adds real information to a BMI or body fat reading.
How to use this calculator
Measure waist at the narrowest point (women) or at the navel (men), and hip at the widest point.
Enter both measurements — any consistent unit works, since WHR is a ratio.
Understanding your result
WHR describes where you carry weight. A higher ratio means more abdominal fat relative to hip fat, which is linked to higher cardiovascular risk.
WHO thresholds differ by sex and are shown in the table below.
Why distribution matters more than total
Two people can weigh the same, stand the same height, and carry the same total body fat, and face meaningfully different cardiovascular risk. The difference is where the fat is.
Fat stored under the skin on the hips and thighs is comparatively inert. Fat stored inside the abdomen, packed around the liver, pancreas and intestines, is not: it is metabolically active tissue that releases free fatty acids directly into the portal circulation and secretes inflammatory signalling molecules.4 Waist-to-hip ratio is a crude but effective proxy for how much of your fat is the second kind.
The evidence that made this mainstream
INTERHEART enrolled around 27,000 people across 52 countries and found waist-to-hip ratio a substantially better predictor of myocardial infarction than BMI — the association held after adjustment, and across every region studied.2 That is an unusually robust result for an anthropometric measure.
The thresholds
| Risk category | Men | Women |
|---|---|---|
| Low (success) | Below 0.90 | Below 0.80 |
| Moderate (warning) | 0.90 – 0.99 | 0.80 – 0.84 |
| High (danger) | 1.00 and above | 0.85 and above |
- Low risk (0.7–0.9)
- Moderate (0.9–1)
- High risk (1–1.2)
| Category | Range |
|---|---|
| Low risk | 0.7 to 0.9 ratio |
| Moderate | 0.9 to 1 ratio |
| High risk | 1 to 1.2 ratio |
Worth noting: the Emerging Risk Factors Collaboration, pooling 58 studies and over 220,000 people, found that once blood pressure, cholesterol and diabetes status were accounted for, adding waist measures to BMI did not improve cardiovascular risk prediction much further.3 That does not make the measurement useless — it means its value is in flagging people who need those other things checked, rather than in the ratio itself being a separate disease.
Measuring it properly
The ratio is only as good as the two measurements, and both are easy to take badly.
- Waist. WHO specifies the midpoint between the lowest rib and the top of the hip bone — not the navel, and not where your trousers sit. Find both landmarks with your fingers first.
- Hips. The widest part of the buttocks, tape horizontal all the way round. Check in a mirror that it has not ridden up at the back.
- Breathe normally. Measure at the end of a relaxed exhale. Do not hold your breath, suck in, or push out.
- Tape snug, not tight. It should sit flat against the skin without compressing it. Measure over bare skin or one thin layer.
- Repeat. Take each measurement twice; if they differ by more than a centimetre, take a third and average.
Why the navel is the wrong landmark
Navel position varies between people and moves as abdominal fat changes, which makes it unreliable for tracking your own progress over time. The rib-to-hip midpoint is a skeletal landmark and stays put.
What to do with a high ratio
Visceral fat responds well to the things that are good for you anyway — and, usefully, it tends to go first when you lose weight, which means early progress is disproportionately the fat you most want to lose.
- A modest overall deficit. Visceral fat is mobilised readily. The Calorie Calculator sets a sustainable target.
- Regular aerobic exercise. Reduces visceral fat measurably even without much weight change.
- Sleep and alcohol. Both are strongly associated with abdominal fat accumulation, and both are easier to change than most people expect.
- Get the associated markers checked. A high ratio is a good reason to have blood pressure, lipids and fasting glucose measured — which, per the Emerging Risk Factors work, is where the actionable information really is.3
Terms used on this page
- Visceral fat
- Fat stored inside the abdominal cavity around the organs. Metabolically active, inflammatory, and the tissue that makes abdominal obesity riskier than the same mass elsewhere.
- Subcutaneous fat
- Fat stored directly under the skin. The kind you can pinch. Comparatively benign, and the dominant store on hips and thighs.
- Abdominal obesity
- Excess fat concentrated around the midsection, defined by waist circumference or waist-to-hip ratio rather than by total weight. A person of normal BMI can have it.
The formula
- Waist 80 cm, hip 100 cm
- WHR = 80 / 100
Source: WHO WHR thresholds. Published clinical/scientific formula.
Limitations
- WHR is a proxy for abdominal fat distribution, not a diagnosis.
- It interacts with overall body composition and doesn't replace BMI or body-fat measurements.
References
- 1.Waist circumference and waist-hip ratio: report of a WHO expert consultation. World Health Organization, 2011.
- 2.Obesity and the risk of myocardial infarction in 27,000 participants from 52 countries (INTERHEART). Yusuf et al., The Lancet 366(9497):1640–1649, 2005.
- 3.Separate and combined associations of body-mass index and abdominal adiposity with cardiovascular disease. Emerging Risk Factors Collaboration, The Lancet 377(9771):1085–1095, 2011.
- 4.Visceral and ectopic fat, atherosclerosis, and cardiometabolic disease: a position statement. Neeland et al., The Lancet Diabetes & Endocrinology 7(9):715–725, 2019.
Frequently asked questions
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Read articleNot medical advice. This calculator is for general informational purposes only and is not a substitute for professional medical guidance. Always consult a qualified healthcare provider before making decisions about your health. Read the full medical disclaimer.
Printed from mystatura.com — for general information only, not medical advice.