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Waist to Hip Ratio

Enter your waist and hip measurements to see the ratio and the WHO risk band for your sex.

Work out your waist to hip ratio

Waist to hip ratio: —
WHO risk band: —
Measure your waist at the narrowest point and your hips at the widest point.
Risk bands follow World Health Organization guidance: raised risk above 0.90 for men and 0.85 for women, substantially raised above 1.00 and 0.90.

How to use the Waist to Hip Ratio

  1. Choose your sex and whether you measure in centimetres or inches.
  2. Enter your waist measurement and your hip measurement.
  3. Read your ratio and the WHO risk band with a short explanation.

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Frequently Asked Questions

Common questions about the free online waist to hip ratio.

Measure your waist at its narrowest point and your hips at their widest point, then divide the waist figure by the hip figure.
The World Health Organization treats a ratio below 0.90 for men and below 0.85 for women as the low risk band for metabolic health.
A ratio from 0.90 to 1.00 for men and 0.85 to 0.90 for women is treated as raised risk by the World Health Organization.
Above 1.00 for men and 0.90 for women the risk band is substantially raised, which is a strong signal to seek medical advice.
Measure your waist at the narrowest point above the navel and your hips at the widest point around the buttocks, keeping the tape level.
Yes. Measure directly against the skin or over thin clothing, keep the tape snug but not tight and breathe out normally before reading it.
The adult WHO bands are intended for adults. Children and teenagers need age specific growth charts assessed by a health professional.
No. The ratio is calculated entirely in your browser, so your measurements never leave your own device.
Yes. The tool is fully responsive and works in any modern browser on desktop, tablet and phone.

Last updated: October 10, 2026