Waist-to-Height Ratio Calculator
The 'keep your waist below half your height' screen — simpler than BMI and better at flagging central fat.
Meta-analyses covering 300,000+ adults found WHtR out-discriminates BMI for cardiometabolic risk because it tracks visceral fat, the metabolically active depot. The 0.5 boundary works across sexes and ethnic groups, and UK NICE guidance adopted it in 2022.
Formula
For general information only — not medical advice, a diagnosis or a treatment plan. Consult a qualified healthcare professional before making health, diet, medication or exercise decisions.
The 'keep your waist below half your height' screen — simpler than BMI and better at flagging central fat. The Waist-to-Height Ratio Calculator is a free, private waist to height ratio tool — every result computes instantly in your browser with no sign-up and no data upload.
About Waist-to-Height Ratio Calculator
Meta-analyses covering 300,000+ adults found WHtR out-discriminates BMI for cardiometabolic risk because it tracks visceral fat, the metabolically active depot. It applies WHtR = waist ÷ height. Use the Waist-to-Height Ratio Calculator to get an instant, clearly-explained result with the working shown step by step — free, private and with the source method cited.
How to use Waist-to-Height Ratio Calculator
- 1Enter your details in the Waist-to-Height Ratio Calculator input fields above.
- 2The result updates instantly with the working and reference bands shown.
- 3Adjust any value to explore how it changes the outcome — it's free and unlimited.
Why use Waist-to-Height Ratio Calculator?
- ✓Instant waist to height ratio result that recomputes as you type — no waiting, no page reloads
- ✓100% client-side: your health data never leaves your browser
- ✓Shows the actual formula and your numbers substituted in, so you can see exactly how the result is reached
- ✓Based on published, citable sources (Ashwell M et al., Obes Rev 2012;13:275-86 (meta-analysis))
- ✓Free forever with no sign-up, account or app install
Frequently asked questions
How does the Waist-to-Height Ratio Calculator work?+
Meta-analyses covering 300,000+ adults found WHtR out-discriminates BMI for cardiometabolic risk because it tracks visceral fat, the metabolically active depot. The calculation uses the formula: WHtR = waist ÷ height. Everything runs instantly in your browser as you type — your inputs are never uploaded.
Is the Waist-to-Height Ratio Calculator accurate, and what is it based on?+
The method is traceable to authoritative sources, including Ashwell M et al., Obes Rev 2012;13:275-86 (meta-analysis); NICE guideline NG246 (2022). Results are estimates — individual variation always applies, so treat the output as a well-grounded starting point.
Is the Waist-to-Height Ratio Calculator free and private?+
Yes. It's completely free with no sign-up, and all computation happens locally in your browser, so none of your health data ever leaves your device.
Can I use this for medical decisions?+
This tool is for general information only and is not medical advice. Always consult a qualified healthcare professional before making health decisions.
What can I use the Waist-to-Height Ratio Calculator for?+
It's commonly used for waist to height ratio, whtr, waist height. The 'keep your waist below half your height' screen — simpler than BMI and better at flagging central fat.
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