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Waist-to-Hip Ratio Calculator

Calculate your waist-to-hip ratio and waist-to-height ratio, with a cardiovascular risk assessment based on WHO guidelines. Free, instant.

GENDER
UNIT

Measure at navel / narrowest point

Widest part of hips/buttocks

For waist-to-height ratio

Why body fat distribution matters more than weight

Where your body stores fat is as important as how much fat you carry. Fat stored around the abdomen (visceral fat) surrounds internal organs and is metabolically active — it releases inflammatory compounds and hormones that increase insulin resistance and cardiovascular risk. Fat stored in the hips and thighs (subcutaneous) is far less harmful.

WHR vs BMI — what each measures

  • BMI: Body Mass Index measures overall body mass relative to height. Simple to calculate but does not distinguish fat from muscle, or central from peripheral fat.
  • WHR: Measures fat distribution — specifically the ratio of abdominal to hip fat. Better predictor of cardiovascular and metabolic risk, per the WHO Expert Consultation report on waist circumference and waist-to-hip ratio.
  • WHtR: Accounts for height differences and may be the most practical single measure — “keep your waist below half your height.”

How to reduce waist circumference

  • Aerobic exercise (brisk walking, cycling, swimming) is most effective for reducing visceral fat
  • Reduce refined carbohydrates and added sugars
  • Strength training builds muscle and improves insulin sensitivity
  • Adequate sleep (7–9 hours) — sleep deprivation drives cortisol, which promotes central fat storage
  • Manage stress — chronic stress elevates cortisol and promotes belly fat

Common use cases

Individuals who are within a normal BMI range but concerned about abdominal fat use WHR to get a more accurate picture of their metabolic health risk than weight or BMI alone can provide. Fitness coaches track clients' WHR monthly alongside body weight to show that waist reduction — even when the scale doesn't move much — represents meaningful health progress. People with a family history of type 2 diabetes or cardiovascular disease use the tool to monitor a key risk indicator between annual check-ups. Healthcare students use it to practice the measurement and interpretation process before clinical placements.

Frequently asked questions

What is waist-to-hip ratio (WHR)?
WHR is the ratio of waist circumference to hip circumference (WHR = Waist ÷ Hip). It is used to assess body fat distribution. Central or abdominal obesity (high WHR) is associated with significantly higher risk of type 2 diabetes, cardiovascular disease, hypertension, and metabolic syndrome.
How do I measure waist and hip correctly?
Waist: Measure at the narrowest point of your torso, typically at or just above the navel, while relaxed (not sucked in). Hip: Measure at the widest point of your hips and buttocks. Stand straight, feet together, and take the measurement horizontally.
What is a healthy waist-to-hip ratio?
WHO guidelines: Men — low risk below 0.90, moderate risk 0.90–0.99, high risk 1.0+. Women — low risk below 0.80, moderate risk 0.80–0.84, high risk 0.85+. These thresholds are based on cardiovascular disease risk data from large population studies.
Is WHR better than BMI for health assessment?
WHR is considered a better predictor of cardiovascular risk than BMI for many populations. BMI does not distinguish between muscle and fat, nor does it account for fat distribution. Central obesity (belly fat) is more metabolically harmful than fat stored in the hips/thighs. Using both BMI and WHR together provides a more complete picture.
What is the waist-to-height ratio (WHtR)?
WHtR = Waist ÷ Height. The recommended healthy range is 0.4–0.5. A simple rule: 'keep your waist to less than half your height.' Research suggests WHtR may be an even better predictor of metabolic risk than WHR, as it accounts for body size differences.

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