Waist-to-Hip Ratio Calculator
Calculate your waist-to-hip ratio and see what it means for health risk with this free WHR calculator that works 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 hip measurements.
- Press Calculate.
How it works
Waist ÷ hip. Higher ratios are linked to higher health risk.
Worked example
80 cm waist, 100 cm hip. = 0.8.
Common mistakes
- Measuring the waist at the belly button instead of the narrowest point above the navel.
- Pulling the tape tight — it should sit flat against the skin without compressing it.
Frequently asked questions
What waist-to-hip ratio is healthy?
Health risk rises above about 0.90 for men and 0.85 for women under WHO guidance; lower is generally better.
Is waist-to-hip ratio better than BMI?
It captures fat distribution that BMI misses — central, apple-shaped fat carries more risk — so the two measures complement each other.
What is a healthy waist-to-hip ratio?
As a general guide, below about 0.90 for men and 0.85 for women is considered lower-risk. This is a screening guide, not medical advice.
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- BMI Prime Calculator
- Body Surface Area Calculator
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- Calories to Kilojoules Converter
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Cite this tool
Zerdly. (2026). Waist-to-Hip Ratio Calculator. Retrieved from https://www.zerdly.com/tools/waist-hip-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.