Calculate your Waist-to-Hip Ratio (WHR) and health risk category based on WHO guidelines.
This tool calculates the ratio between your waist circumference and hip circumference, a measure used to assess body fat distribution and associated health risk. It's considered by some health researchers to be a useful complement to BMI, since it accounts for fat distribution rather than overall size alone.
Waist-to-Hip Ratio = Waist Circumference ÷ Hip Circumference, using consistent units for both measurements. The World Health Organization defines increased health risk at a ratio above 0.90 for men and above 0.85 for women.
Measure your waist (at the narrowest point, typically above the belly button) and hips (at the widest point), enter both values, and the calculator returns your ratio and general risk category.
Example: A person with a 32-inch waist and 40-inch hips has a waist-to-hip ratio of 32 ÷ 40 = 0.8.
Why does fat distribution matter, not just total body fat? Research suggests that fat stored around the abdomen ("apple" shape) is associated with higher health risk than fat stored around the hips and thighs ("pear" shape), even at similar total body fat levels, which is why distribution-based measures like this ratio provide additional useful information.
How is waist-to-hip ratio different from BMI? BMI considers only height and total weight, without distinguishing where fat is distributed on the body, while waist-to-hip ratio specifically captures body shape and fat distribution patterns.
What is considered a healthy waist-to-hip ratio? General guidelines suggest a ratio below 0.90 for men and below 0.85 for women is associated with lower health risk, though individual variation and other health factors also matter.
How should I measure my waist and hips accurately? Measure your waist at its narrowest point (typically just above the belly button) and your hips at their widest point, using a flexible tape measure snug against the skin without compressing it, for the most accurate and consistent readings.
Is waist-to-hip ratio a complete measure of health? No, like other simple body measurements, it's a useful general screening indicator but doesn't capture every aspect of health — a comprehensive health assessment should consider multiple factors and ideally involve a healthcare professional.