Waist-to-Hip Ratio Calculator
Calculate your waist-to-hip ratio — a simple measure of fat distribution that the World Health Organization uses to assess health risk.
Use any unit, as long as waist and hip use the same one
What is the waist-to-hip ratio?
The waist-to-hip ratio (WHR) is your waist circumference divided by your hip circumference. It is a simple measure of how body fat is distributed. People who carry more fat around their middle (an apple shape) tend to have higher ratios, while those who carry it around the hips and thighs (a pear shape) have lower ratios. The World Health Organization recognises WHR as a useful indicator of health risk, because where fat is stored matters as much as how much there is.
Why fat distribution matters
Fat stored around the abdomen, known as visceral fat, surrounds your internal organs and is metabolically active in ways that raise health risk. It is more strongly linked to type 2 diabetes, high blood pressure, heart disease and stroke than fat stored on the hips and thighs. This is why two people with the same BMI can have very different health risks depending on where they carry their weight — and why the waist-to-hip ratio adds information that weight alone cannot.
Understanding your result
According to WHO guidance, health risk rises when the ratio reaches about 0.90 or above in men and 0.85 or above in women. Below those thresholds, risk is generally lower. Because the ratio divides two measurements taken in the same unit, it does not matter whether you measure in centimetres or inches, as long as you are consistent. Measure your waist at the navel and your hips at the widest point, keeping the tape snug but not tight.
What you can do
If your waist-to-hip ratio is in a higher-risk range, the encouraging news is that abdominal fat often responds well to lifestyle changes. Regular physical activity (especially combining aerobic exercise with strength training), a balanced diet, reducing refined carbohydrates and added sugars, managing stress and getting enough sleep all help reduce visceral fat over time. Even modest reductions in waist size can meaningfully lower your health risk. Discuss any concerns with your doctor.
Frequently Asked Questions
According to the World Health Organization, health risk increases at a ratio of about 0.90 or above for men and 0.85 or above for women. Below these thresholds, risk is generally lower. A lower ratio indicates a healthier fat distribution.
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Sources & References
- 1.World Health Organization. Waist Circumference and Waist-Hip Ratio: Report of a WHO Expert Consultation.
- 2.Harvard T.H. Chan School of Public Health. Waist Size Matters.
- 3.British Heart Foundation. Why your waist size matters.
LifeCheckIQ content is based on peer-reviewed research, recognised clinical guidelines, and authoritative medical sources, and is reviewed by Deborah Adotso, General Nurse, for clinical accuracy.
Medical Disclaimer: This tool is for informational and educational purposes only. Results are not a medical diagnosis. Always consult a qualified healthcare professional for medical advice, diagnosis, or treatment. In an emergency, call your local emergency number or visit the nearest hospital immediately.