FREE TOOL · ASHWELL & GIBSON 2016

Waist-to-Height
Ratio Calculator.

The simplest rule in health: keep your waist less than half your height. WHtR detects cardiovascular risk that BMI misses, even in people with a "healthy" BMI.

Ashwell & Gibson 2016
Better CVD Predictor than BMI
Universal, All Ages & Sexes
PDF / Share Report

Enter Your Measurements

Fields marked * are required

Calculated in your browser, no data stored or shared.
How to measure correctly (tap to expand)
📏
Height: Stand barefoot, heels together, back straight against a wall. Measure from floor to the top of your head.
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Waist: Measure at the narrowest point, midway between the bottom of your lowest rib and the top of the hip bone (iliac crest). Exhale normally; do not suck in your stomach.
✅
Tips: Measure on bare skin. Take 2–3 readings and use the average. Best measured in the morning before eating.
📌 Age ≥ 50 uses adjusted interpretation

WHtR = Waist ÷ Height · Ashwell & Gibson 2016 · NICE · NIN-ICMR 2024

YOUR RESULTS
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WHtR
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½ Height cm
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Half-Height
Complete form above
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waist ÷ height ratio

WHAT YOU GET

📊
WHtR ScorePrecise waist-to-height ratio
❤️
4-Tier Risk LevelAshwell & Gibson classification
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Half-Height CheckVisual waist vs. ½ height comparison
🆚
vs. BMIShows what BMI misses about your risk
💡
Personalised TipsDiet, exercise & lifestyle advice
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PDF ReportSave or share with your doctor

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BASED ON

Ashwell & Gibson 2016BMJ Open: WHtR boundary value 0.5
NICE GuidelinesWHtR for early health risk screening
WHO 2008Waist circumference & central obesity
AHA 2021Scientific statement: obesity and cardiovascular disease
NIN-ICMR 2024Indian nutrition guidelines

TRY ALSO

📐
WHR CalculatorWaist-to-Hip · WHO Risk Tiers
 📊
Body Fat CalculatorUS Navy Method · ACE tiers
 🧬
Smart Health CalculatorBMI · TDEE · Macros · Meal Plan

⚕️ For educational and screening purposes only. Not a substitute for professional medical advice. WHtR is an indicator of early health risk: it does not diagnose disease. Individual results may vary by ethnicity, age, and body composition. Consult a qualified physician for clinical cardiovascular risk assessment. Designed for adults aged 18+ only.

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