Waist-to-Height Ratio Calculator
Calculate your waist-to-height ratio to check your health risk category from waist measurement and height, free in your browser.
Enter Values
Before you rely on this: First-pass guide only. Verify safety-critical or regulated work against the relevant standards, your project requirements and a qualified professional.
How to use this calculator
- Enter your waist and height in the same unit.
- Press Calculate for the ratio and category.
How it works
Divide your waist by your height. A ratio under 0.5 is commonly considered healthy; higher values point to more central body fat. It's a quick screen, not a diagnosis.
Worked example
Waist 80 cm, height 180 cm. 80 ÷ 180 = 0.44 — within the healthy range.
Frequently asked questions
Is waist-to-height ratio better than BMI?
Many studies find it a better quick indicator of central body fat, since it accounts for where weight sits. Both are screening guides, not diagnoses.
Where do I measure my waist?
Around the narrowest point, usually just above the belly button, after breathing out normally — don't pull the tape tight.
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Explore more in Health, Fitness, Nutrition & Body.
Cite this tool
Zerdly. (2026). Waist-to-Height Ratio Calculator. Retrieved from https://www.zerdly.com/tools/waist-to-height-ratio-calculator/
Tip: Enter any known values to calculate the remaining results.
All calculations run in your browser. Your inputs are never saved or transmitted.