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Waist-to-Hip Ratio

Health

Waist-to-Hip Ratio (WHR)

Waist-to-hip ratio compares your waist circumference to your hip circumference to estimate how body fat is distributed and assess related health risk.

Definition

Waist-to-hip ratio (WHR) is a simple measurement that compares the circumference of your waist to the circumference of your hips, used to estimate how body fat is distributed across your frame. It's a quick, tape-measure-only alternative to more involved body composition methods, and it's widely used in health screening because fat distribution — not just total fat — affects disease risk. You can calculate yours with the Waist-Hip Ratio Calculator.

The reasoning behind WHR is that fat stored around the abdomen (visceral fat) behaves differently, metabolically, than fat stored around the hips and thighs (subcutaneous fat). Visceral fat surrounds internal organs and is more strongly associated with insulin resistance, high blood pressure, and cardiovascular disease. A higher waist-to-hip ratio signals a higher proportion of this abdominal fat, regardless of total body weight.

The World Health Organization publishes reference thresholds for WHR: a ratio above 0.90 in men or above 0.85 in women is classified as indicating substantially increased health risk. Because it requires only two tape measurements and no equipment, WHR is one of the easiest body composition indicators to track at home over time.

Formula

Waist-to-Hip Ratio = Waist Circumference ÷ Hip Circumference

Both measurements must be taken in the same unit (centimeters or inches). Waist is measured at the narrowest point of the torso, typically at or just above the navel, and hip is measured at the widest point around the buttocks.

Worked Example

A woman measures her waist at 76 cm and her hips at 100 cm.

WHR = 76 ÷ 100 = 0.76

This falls below the WHO threshold of 0.85 for women, indicating a lower-risk fat distribution pattern. If the same woman's waist measured 90 cm instead, her ratio would be 90 ÷ 100 = 0.90, crossing into the higher-risk category despite the hip measurement staying the same.

Key Things to Know

  • It measures distribution, not total fat. Waist-to-hip ratio complements, rather than replaces, Body Fat Percentage, since two people with identical total body fat can have very different ratios depending on where that fat sits.
  • Abdominal fat carries higher metabolic risk. A higher WHR is linked to greater visceral fat, which is more strongly associated with cardiovascular and metabolic disease than fat stored in the hips or thighs.
  • WHO thresholds provide a quick risk flag. A ratio above 0.90 for men or 0.85 for women is treated as an early indicator worth discussing with a healthcare provider, not a diagnosis on its own.
  • Measurement technique affects accuracy more than most people expect. Measuring at the wrong point on the waist or hips, or measuring over bulky clothing, can shift the ratio enough to change its risk classification.
  • Tracking it over time is more useful than a single reading. Because WHR responds to changes in fat distribution from diet and exercise, remeasuring every few weeks gives a better signal of progress than a one-off number.

Related Calculators

Waist-to-Hip Ratio Calculator →Calculate your waist-to-hip ratio and see your health risk category based on WHO guidelines. Enter waist and hip measurements for an instant result.

Related Terms

Body Fat PercentageBody Fat Percentage (BF%)

Frequently Asked Questions

The World Health Organization considers a waist-to-hip ratio above 0.90 for men and above 0.85 for women to indicate increased health risk from abdominal fat. Ratios below these thresholds are generally considered lower risk, though ideal values can vary slightly by population. The Waist-Hip Ratio Calculator applies these thresholds automatically once you enter your measurements.
Waist-to-hip ratio captures where fat is stored, and abdominal or visceral fat around the waist is more strongly linked to heart disease and type 2 diabetes than fat stored around the hips and thighs. Two people can weigh the same and have very different disease risk depending on this ratio. That is why it is often used alongside BMI rather than as a replacement for it.
An apple shape describes a body that stores more fat around the waist and abdomen, producing a higher waist-to-hip ratio, while a pear shape stores more fat around the hips and thighs, producing a lower ratio. Apple-shaped fat distribution is associated with higher cardiovascular risk. These terms are informal descriptions of the same measurement waist-to-hip ratio quantifies.
Measure your waist at the narrowest point, usually just above the belly button, and your hips at the widest point around the buttocks, keeping the tape measure snug but not compressing the skin. Measurements should be taken standing, at the end of a normal exhale, without heavy clothing. Small measurement errors of even 1 to 2 cm can shift the calculated ratio noticeably.
Yes, because the ratio depends on where fat is distributed rather than total body weight, targeted changes in fat distribution or muscle gain around the hips can shift the ratio even if scale weight stays the same. Reducing visceral fat around the waist through diet and exercise typically improves the ratio faster than changes in hip measurement. This is why tracking waist-to-hip ratio alongside weight gives a fuller picture.