What is the Waist-to-Height Ratio Calculator?
Calculate your waist-to-height ratio, a simple screening measure of central body fat. Waist-to-height ratio is a simple screening measure of central body fat that works across different heights and is easy to check at home.

How to use the Waist-to-Height Ratio Calculator
- Enter your waist, your height.
- Results update automatically as you type; you can also press Calculate.
- Read the output: waist-to-height ratio, guideline, waist for a 0.5 ratio.
- Use the 📊 chart to see the result visually, then copy or share it.
Formula and method
Worked example
With waist = 84 cm, height = 175 cm, the Waist-to-Height Ratio Calculator returns waist-to-height ratio: 0.48; guideline: Healthy range (< 0.5); waist for a 0.5 ratio: 87.5 cm.
Where the Waist-to-Height Ratio Calculator helps in real life
You want a quick health measure besides BMI, which does not show where fat is carried. Measuring your waist and height gives a ratio you can compare with the common guideline of staying under 0.5.
You started a walking routine and your weight is barely changing. Checking this ratio monthly can show your waist shrinking even when the scale looks stuck.
Common mistakes to avoid
- Measuring the waist at a different height each time.
- Holding your breath or sucking in your stomach while measuring.
- Using the result as a diagnosis rather than a screening number.
- Measuring right after a large meal.
💡 Practical tip: A common guideline is to keep your waist measurement under half your height.

Tips for better results
- Measure midway between your lowest rib and the top of your hip bone.
- Check at the same time of day, ideally before breakfast.
- Discuss any concerns with a healthcare professional.
⚠️ This tool provides general information and is not medical advice. It is not a substitute for diagnosis or treatment by a qualified healthcare professional.
Frequently asked questions
What does the Waist-to-Height Ratio Calculator do?
Calculate your waist-to-height ratio, a simple screening measure of central body fat.
How is it calculated?
The Waist-to-Height Ratio Calculator uses this method: WHtR = Waist ÷ Height (keep your waist under half your height).
Can you show an example?
With waist = 84 cm, height = 175 cm, the Waist-to-Height Ratio Calculator returns waist-to-height ratio: 0.48; guideline: Healthy range (< 0.5); waist for a 0.5 ratio: 87.5 cm.
Is the Waist-to-Height Ratio Calculator accurate?
It uses standard published formulas and is tested against known values, but results are estimates for guidance. This tool provides general information and is not medical advice. It is not a substitute for diagnosis or treatment by a qualified healthcare professional.
Is this tool free and private?
Yes — the Waist-to-Height Ratio Calculator is completely free with no sign-up, and it runs entirely in your browser, so the values you enter are never uploaded to our servers.
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