The waist-to-hip ratio (WHR) is a simple indicator of body fat distribution. Unlike BMI, it shows where the fat is located — and that's exactly what determines health risk.
In this article, you'll learn what WHR is, how to measure it correctly, which WHO thresholds apply, and why the waist-to-hip ratio can be more meaningful than BMI.
What Is the Waist-to-Hip Ratio?
WHR is calculated by dividing waist circumference by hip circumference. A high value indicates abdominal (belly-centered) fat distribution — a known risk factor for cardiovascular disease, type 2 diabetes, and metabolic syndrome.
WHR = Waist circumference ÷ Hip circumference
How to Measure Correctly: Step by Step
Waist circumference — Measure at navel height, relaxed after exhaling. The tape should be level and snug without digging in.
Hip circumference — Measure at the widest point of the buttocks. Stand upright, feet together.
Calculate — Divide waist circumference by hip circumference. Or use our WHR Calculator.
WHO Thresholds
The World Health Organization (WHO) defines the following thresholds for increased health risk:
| Risk Level | Men | Women |
|---|---|---|
| Low risk | ≤ 0.85 | ≤ 0.80 |
| Moderate risk | 0.86 – 0.90 | 0.81 – 0.85 |
| High risk | > 0.90 | > 0.85 |
Calculate your waist-to-hip ratio now
WHO-based risk assessment — free and no sign-up required.
Calculate for free now →WHR vs. BMI: Why Fat Distribution Matters
BMI only measures the ratio of weight to height — it cannot distinguish between muscle and fat mass and says nothing about fat distribution.
WHR specifically captures abdominal obesity. Studies show that belly fat (visceral fat) is metabolically more active and correlates more strongly with heart disease, stroke, and diabetes than subcutaneous fat.
Complement your WHR with your body fat percentage for a complete picture of your body composition.
Conclusion
The waist-to-hip ratio is a quick, free test for your health risk. Use our WHR Calculator and complement the result with your BMI and body fat percentage.
Related Articles
Calculate BMI: What the Body Mass Index Really Tells You
Calculate your BMI with the formula, WHO table & interpretation. Learn the limits of BMI and which alternatives exist.
Read more →Body Fat Percentage Calculator: Navy Method, Charts & Tips
Calculate body fat percentage using the U.S. Navy method. Categories, guidelines and why body fat is more meaningful than BMI.
Read more →