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Waist-to-Hip Ratio Calculator (WHO Risk Bands)
One ratio, WHO risk bands, centimetres or inches.
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About Waist-to-Hip Ratio Calculator (WHO Risk Bands)
Calculate your waist-to-hip ratio from waist and hip measurements and see the WHO risk band for men and women, in cm or inches.
Why does waist-to-hip ratio matter?
Where fat is stored matters more for metabolic and cardiovascular risk than total body weight. Waist-to-hip ratio captures that distribution in a single number, which is why the WHO publishes risk bands for it alongside waist circumference.
How do I measure correctly?
Measure your waist at the narrowest part of the torso, usually just above the navel, with the tape snug but not compressing the skin. Measure your hips at the widest point of the buttocks, keeping the tape level all the way round.
📐 Methodology & Reference Accuracy:
Calculations, formulas, and conversions execute locally in your web browser. Output models are benchmarked against official reference standards and updated for 2026.
🔒 This tool runs entirely in your browser. Nothing is uploaded or stored.
Background reading: Waist To Hip Ratio on Wikipedia. More: all women's health.
Frequently Asked Questions about Waist-to-Hip Ratio Calculator (WHO Risk Bands)
What is a healthy waist-to-hip ratio?
For women the WHO low-risk band is 0.80 or below, and for men 0.90 or below. Ratios above 0.85 for women and 1.00 for men are in the high-risk band.
Is waist-to-hip ratio better than BMI?
They answer different questions. BMI uses weight and height and cannot tell muscle from fat. Waist-to-hip ratio reflects fat distribution, which is why clinicians often use both together.
How is waist-to-hip ratio calculated?
Divide your waist measurement by your hip measurement, both in the same units: for example 76 cm divided by 96 cm gives 0.79. The units cancel out, so centimetres and inches produce the same ratio.