Waist-to-Hip Ratio Calculator
Calculate your waist-to-hip ratio and WHO cardiovascular risk category.
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📘 What is the Waist-to-Hip Ratio Calculator?
Waist-to-hip ratio captures something BMI and even total body fat percentage miss entirely: where on your body fat is actually distributed. Fat stored around the abdomen carries meaningfully higher cardiovascular risk than the same amount of fat stored around the hips and thighs, even at an identical total body weight.
⚙️ How Waist-Hip Ratio is calculated
Why distribution matters more than total amount
Abdominal ("visceral") fat surrounds internal organs and is more metabolically active in ways linked to insulin resistance and cardiovascular disease, compared to fat stored subcutaneously around the hips and thighs — two people with the same body fat percentage can carry very different cardiovascular risk depending on this distribution.
WHO risk thresholds
The World Health Organization considers a ratio below 0.90 for men and below 0.80 for women as lower risk, with risk increasing as the ratio rises above these thresholds.
Why measurement consistency matters
Measure both waist (at the navel) and hip (at the widest point) at the same time of day, ideally first thing in the morning before eating, since both measurements can shift slightly throughout the day.
Waist-to-hip ratio
WHR = waist circumference ÷ hip circumference
🧮 Worked examples
Example — male, waist 85cm, hip 100cm
A man with an 85cm waist and 100cm hip measurement.
→ WHR = 0.85, classified as low risk (below the 0.90 male threshold)
Example — same waist, smaller hip
Same 85cm waist, but hip measurement of 88cm instead.
→ WHR = 0.97, now classified as moderate to high risk — illustrating how hip measurement, not just waist size, changes the risk category
💡 Original insights & how to use this calculator
A useful companion to BMI, not a replacement
WHR adds information BMI cannot capture at all — use both together for a more complete picture, since a normal BMI with a high WHR ("apple shape") still carries elevated cardiovascular risk.
Tracking changes during a fat loss program
WHR can reveal whether fat loss is coming disproportionately from the higher-risk abdominal area or more evenly across the body — a useful additional metric alongside weight and body fat percentage.
Understanding personal risk beyond the scale
Two people at the same weight and height can have meaningfully different cardiovascular risk profiles based on fat distribution alone — WHR makes this difference visible.
💡 Expert Tips
Measure both waist and hip at the same time of day for consistency, ideally first thing in the morning before eating.
How to read your result
Waist-to-hip ratio predicts cardiovascular risk better than BMI for many people because it specifically captures abdominal (visceral) fat, which is more metabolically harmful than fat stored elsewhere — but it's still one signal among several, not a standalone diagnosis.
⚠️ Common Mistakes
✕ Measuring the waist at the narrowest visual point instead of the correct anatomical spot.
✓ Waist should be measured at the navel level (or the midpoint between your lowest rib and hip bone), not wherever looks narrowest — this is a common source of artificially 'good' readings.
✕ Holding your stomach in while measuring.
✓ Breathe out normally and relax your stomach before measuring — sucking in gives a falsely low reading that doesn't reflect your actual risk profile.
✕ Treating a single borderline reading as a firm diagnosis.
✓ Track the trend over months alongside other markers (blood pressure, blood sugar) rather than reacting to one measurement in isolation.
Frequently Asked
What is a healthy waist-to-hip ratio?▾
WHO considers below 0.90 (men) or 0.80 (women) as lower risk, with risk increasing above these thresholds.
🔎 Explore related calculators
BMI Calculator
Example 1 — Metric
BMI = 70 ÷ (1.75 × 1.75) = 70 ÷ 3.0625 ≈ 22.9 — Normal weight