Waist to Hip Ratio Calculator
Find your waist to hip ratio by dividing your waist measurement by your hip measurement. Use any unit for both, then see which World Health Organization risk band your ratio falls into.
How to use the waist to hip ratio calculator
- Measure your waist at the narrowest point and your hips at the widest point.
- Enter both numbers using the same unit, such as centimetres or inches.
- Pick your sex and read your ratio and its WHO risk category below.
Examples
Low risk example
Waist 80, hip 100, female
Ratio 0.80 (low risk)
Moderate risk example
Waist 95, hip 100, male
Ratio 0.95 (moderate risk)
Frequently asked questions
What does the waist to hip ratio measure?
It compares the size of your waist to your hips and is a simple proxy for how much fat you carry around your middle. A higher ratio means more central or abdominal fat, which research links to higher cardiovascular and metabolic risk.
What is a healthy waist to hip ratio?
The World Health Organization treats 0.90 or below as low risk for men and 0.80 or below for women. Men from 0.91 to 0.99 and women from 0.81 to 0.85 are moderate risk, while 1.0 or more for men and 0.86 or more for women is high risk.
How do I measure my waist and hips correctly?
Measure your waist at its narrowest point, usually just above the belly button, and your hips at the widest part of your buttocks. Keep the tape level and snug but not tight, and use the same unit for both measurements.
Why does the calculator ask for my sex?
Men and women carry fat differently, so the WHO uses different thresholds for each. Selecting your sex applies the correct risk bands. The ratio itself, waist divided by hips, is the same calculation for everyone.
Is this medical advice?
No. This tool is for general information only and is not medical advice or a diagnosis. Waist to hip ratio is one screening signal among many. Speak to a doctor or qualified health professional about your personal health and any concerns.
Is my data sent anywhere?
No. The calculation runs entirely in your browser. Your waist and hip measurements are never uploaded, logged or stored.
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