Waist-to-Height Ratio

Calculate your waist-to-height ratio (WHtR). One of the simplest and most predictive measures of cardiometabolic health risk.

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RatioCategory
< 0.40Underweight
0.40 – 0.49Healthy
0.50 – 0.59Overweight
≥ 0.60Obese

What Is Waist-to-Height Ratio?

Waist-to-height ratio (WHtR) is calculated by dividing your waist circumference by your height. It is one of the simplest and most powerful single-number health screening tools available — some researchers argue it outperforms both BMI and waist-to-hip ratio in predicting cardiometabolic risk across all ages and ethnicities.

The “Keep Your Waist Below Half Your Height” Rule

The key threshold is 0.5: your waist should be less than half your height. This simple rule works because it adjusts for body size — a 90 cm waist means very different things on a 160 cm vs. a 190 cm person. A WHtR above 0.5 is associated with meaningfully increased risk of diabetes, hypertension, and cardiovascular disease.

Advantages Over BMI

Unlike BMI, WHtR accounts for central fat distribution and is unaffected by muscle mass. It also uses only two measurements rather than requiring weight, making it practical in settings without scales.

Frequently Asked Questions

What is the ideal waist-to-height ratio?
The widely recommended target is below 0.5 for both men and women. Keeping your WHtR below this threshold is associated with significantly lower cardiometabolic risk.
Is WHtR more accurate than BMI?
Several large studies suggest WHtR is a better predictor of cardiovascular risk and metabolic syndrome than BMI, particularly because it captures abdominal fat distribution that BMI ignores.
How do I lower my waist-to-height ratio?
Since height is fixed, reducing your waist circumference is the only lever. Regular aerobic exercise, strength training, and a diet low in refined carbohydrates and added sugars are most effective.
Medical Disclaimer: This calculator is for informational purposes only and does not constitute medical advice. Always consult a qualified healthcare professional for health decisions.