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.
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.
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.
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.
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.
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.
Waist-to-hip ratio (WHR) is calculated by dividing your waist circumference by your hip circumference, and it's used as an indicator of how body fat is distributed rather than simply how much fat you carry overall. Because fat stored around the abdomen (an "apple" shape) is associated with different health risks than fat stored around the hips and thighs (a "pear" shape), WHR gives health professionals a useful supplementary measure alongside BMI, since two people can have an identical BMI while carrying their weight in very different places on their bodies.
The World Health Organization generally considers a WHR above 0.90 for men and above 0.85 for women to indicate higher health risk associated with abdominal fat accumulation, though exact thresholds can vary slightly between different health organizations and populations. A lower WHR, indicating that more weight is carried around the hips relative to the waist, is generally associated with lower cardiovascular risk in most research.
Because BMI alone doesn't distinguish between muscle and fat or account for where fat is distributed on the body, pairing it with waist-to-hip ratio gives a more complete picture of potential health risk than either measurement alone. This is particularly relevant for people whose weight falls within a "normal" BMI range but who still carry a disproportionate amount of abdominal fat. As with any single health metric, WHR works best as one part of a broader conversation with a healthcare provider rather than a definitive verdict on your health.
For an accurate WHR reading, measure your waist at its narrowest point (usually just above the belly button) and your hips at their widest point, using a flexible tape measure held snugly but not tight, ideally while standing relaxed rather than pulling in your stomach. Taking both measurements at the same time of day and under similar conditions each time you check also helps keep your tracked numbers consistent and genuinely comparable over time.
For the most complete picture, consider tracking waist-to-hip ratio alongside other measurements like waist circumference alone, body fat percentage, and BMI, since each metric captures a slightly different aspect of body composition and health risk. Tracking several metrics together over time, rather than fixating on any single number, tends to give a more balanced and less anxiety-inducing view of overall health progress.
A single WHR reading offers a useful snapshot, but tracking the ratio every few months alongside lifestyle changes like diet or exercise gives a more meaningful sense of whether your body composition is trending in a healthier direction, rather than relying on one isolated measurement to draw broad conclusions.
Why is waist-to-hip ratio considered a useful indicator of health risk? This ratio reflects body fat distribution, with a higher ratio indicating more abdominal fat, which research has linked to increased cardiovascular and metabolic health risk compared with fat stored elsewhere on the body, even at the same overall body weight.
How does waist-to-hip ratio differ between healthy ranges for men and women? Due to natural differences in body fat distribution, healthy waist-to-hip ratio thresholds are generally set lower for women than for men, reflecting typical biological differences in where each gender tends to store body fat.