Waist-to-Hip Ratio Calculator
Calculate your waist-to-hip ratio and see how it compares with the WHO risk cut-offs for men and women.
How to calculate waist-to-hip ratio
WHR = Waist circumference ÷ Hip circumference
A man with a 34 in waist and 40 in hips has a ratio of 34 ÷ 40 = 0.85, below the WHO cut-off of 0.90.
How to measure
- Waist: stand relaxed and measure midway between the lowest rib and the top of the hip bone, at the end of a normal breath out.
- Hips: measure around the widest part of the buttocks, with your feet together.
- Keep the tape snug but not compressing the skin, and parallel to the floor.
What is a healthy waist-to-hip ratio?
A World Health Organization expert consultation (2008) uses a WHR of 0.90 or more for men and 0.85 or more for women as the cut-off for abdominal obesity and substantially increased risk of metabolic complications. Fat stored around the abdomen is more closely linked to type 2 diabetes and heart disease than fat on the hips and thighs.
| Lower risk | Increased risk (WHO) | |
|---|---|---|
| Men | below 0.90 | 0.90 or more |
| Women | below 0.85 | 0.85 or more |
WHR is a screening measure, not a diagnosis. It is less reliable for children, during pregnancy and for people under about 5 ft tall. Use it alongside the waist-to-height ratio and BMI, and talk to a doctor about your overall risk.
Frequently asked questions
What is a good waist-to-hip ratio for a woman?
Below 0.85, according to WHO cut-offs. A ratio of 0.80 or less is often described as low risk.
What is a good waist-to-hip ratio for a man?
Below 0.90, according to WHO cut-offs.
Is waist-to-hip ratio better than BMI?
It captures where fat is stored, which BMI cannot. Studies find central obesity measures predict heart disease at least as well as BMI; using both gives a fuller picture.
Last reviewed October 2026. Results are estimates; check important decisions with a qualified professional.