Waist-to-Hip Ratio Calculator

Calculate your waist-to-hip ratio (WHR) and assess cardiovascular health risk based on WHO guidelines.

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Waist-to-hip ratio (WHR) is waist circumference divided by hip circumference. WHO low-risk thresholds: men < 0.90, women < 0.80. Above 1.0 for men or 0.85 for women indicates elevated cardiovascular risk. A 2017 Lancet study found WHR predicts heart attack risk better than BMI.

Enter your waist and hip measurements below (cm or inches) for your WHR and risk category.

Gender

Units (metric / imperial)

Waist circumference (cm)

Hip circumference (cm)

Educational Estimates Only: These calculations are approximations based on population-level formulas and may not accurately reflect your individual health status. Body composition varies significantly due to factors like muscle mass, bone density, hydration, and ethnicity. This is not medical advice. Always consult a qualified healthcare provider for personalized assessment, diagnosis, or treatment decisions.

Methodology and sources

Formula or method

Calculates waist-to-hip ratio as waist circumference divided by hip circumference, then compares the result with the WHO risk thresholds named in the tool.

Basis and assumptions

Waist and hip can be entered in either centimetres or inches because the ratio is unitless.
Male and female risk categories follow the WHO thresholds displayed in the calculator.
WHR is a screening measure of fat distribution and does not diagnose cardiovascular disease.
Standard arithmetic; interpretation per the cited formula and WHO thresholds.

What this tool does not decide

Your cardiovascular risk or whether you need treatment. Consult a GP, nurse, or healthcare professional for blood pressure, cholesterol, blood sugar, and history review.
Body composition, pregnancy-related changes, or ethnic-specific risk interpretation.

Sources

WHO waist-to-hip ratio thresholds, as named in this tool
Standard arithmetic: WHR = waist circumference / hip circumference

Last checked: 2026-06-05

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 to 0.99	0.80 to 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.

Worked WHR Example

Waist-to-hip ratio is unitless, so centimetres and inches both work as long as both measurements use the same unit. A waist of 84 cm and hips of 100 cm gives:

84 / 100 = 0.84

The interpretation depends on sex-specific WHO thresholds. The same ratio can sit in a different category for men and women.

Measurement issue	Why it matters
Waist pulled too tight	Can understate abdominal circumference
Hip measured too high	Can reduce hip value and raise WHR
Different units mixed	Invalid ratio, even though the maths still runs

How WHR Complements Other Measures

BMI

BMI screens weight relative to height but does not show where fat is stored. WHR adds distribution context.

Waist Circumference

Waist alone is simple and clinically familiar. WHR adds a hip comparison, which can help distinguish body shape.

Body Fat Percentage

Body fat estimates quantify composition. WHR focuses on abdominal distribution, which is a different question.

Clinical Risk Review

Blood pressure, cholesterol, blood glucose, family history, and smoking status are still needed for a proper risk assessment.

When to Discuss WHR With a GP

Your result is in the high-risk category or waist circumference is also elevated.
You have high blood pressure, raised cholesterol, diabetes, or a family history of early heart disease.
Waist measurement is rising quickly without a clear reason.
You are pregnant, recently postpartum, or living with a medical condition that changes body shape or fluid balance.

WHR Result Review Checklist

A careful measurement process matters because small circumference differences can move the ratio.

Measure waist and hips on the same day, with the same tape, and in the same unit.
Take two or three readings if the first value seems surprising.
Track month-to-month trend rather than reacting to one measurement.
Pair WHR with BMI, waist circumference, and clinical risk factors.
Discuss high-risk results with a healthcare professional rather than self-diagnosing.

Bring both the ratio and the raw measurements to a review. The raw waist number is often clinically useful alongside WHR.

Repeating the measurement calmly is better than reacting to a single surprising result.

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How to use this tool

Measure waist and hip circumference

Enter measurements and select sex

Calculate WHR and risk category

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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Frequently Asked Questions

What is the waist-to-hip ratio?

WHR is your waist circumference divided by your hip circumference. It's one of the best quick indicators of how your body distributes fat and what health risks that pattern carries.

What's a healthy waist-to-hip ratio for men?

Below 0.90 is low risk according to WHO guidelines. Between 0.90 and 0.99 is moderate risk, and 1.0 or above is high risk for cardiovascular disease and type 2 diabetes.

What's a healthy waist-to-hip ratio for women?

Below 0.80 is low risk. Between 0.80 and 0.85 is moderate risk, and above 0.85 is high risk. Women naturally carry more hip fat, so the thresholds are lower than for men.

Where exactly should I measure my waist?

Measure at the narrowest point of your torso, usually just above the belly button and below the rib cage. Stand relaxed, don't suck in your stomach, and keep the tape level and snug without compressing the skin.

Where should I measure my hips?

Measure at the widest point around your buttocks and hips. Stand with feet together, wrap the tape around the fullest part, and keep it level all the way around.

Is waist-to-hip ratio better than BMI?

For assessing health risk from fat distribution, yes. BMI tells you if you're carrying excess weight but can't distinguish belly fat from hip fat. A 2017 Lancet study found WHR was a better predictor of heart attack risk than BMI alone.

What does it mean if I carry weight around my waist?

Abdominal fat wraps around internal organs and is metabolically active, it releases inflammatory compounds that increase risk of heart disease, type 2 diabetes, and certain cancers. Hip and thigh fat carries lower metabolic risk.

Can I change my waist-to-hip ratio?

Yes. Reducing waist circumference through a calorie deficit and regular exercise, especially combined cardio and resistance training, lowers your WHR. You can't spot-reduce belly fat, but overall fat loss tends to reduce visceral fat first.

How often should I measure my WHR?

Monthly is enough to track meaningful changes. Waist circumference fluctuates with meals, hydration, and time of day, so measure first thing in the morning before eating for consistency.

Does waist-to-hip ratio change with age?

Yes. Hormonal changes cause fat to redistribute toward the abdomen, especially after menopause in women and with declining testosterone in men. Regular exercise helps counteract this shift.

What's the difference between WHR and waist circumference alone?

Waist circumference alone is simpler and also useful, over 102 cm (40 in) for men or 88 cm (35 in) for women indicates elevated risk. WHR adds context by accounting for your frame size through the hip measurement.

Should I see a doctor about my WHR?

If your WHR is in the high-risk category, above 0.90 for men or 0.85 for women, it's worth discussing with your GP. They can assess your full cardiovascular risk profile including blood pressure, cholesterol, and blood sugar.

Results are for general informational purposes only and should be checked before use. They are not professional advice. See our Disclaimer and Terms of Service.