Conicity Index Calculator
How close your trunk is to a double-cone vs a cylinder — the abdominal-fat geometry index from 1991.
Valdez's model: a perfect cylinder of your weight and height would score 1.00, a perfect double cone 1.73. Real adults land between 1.0 and 1.4, higher with more abdominal mass. The 0.109 constant assumes average body density — the index needs no hip measurement, unlike WHR.
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.
How close your trunk is to a double-cone vs a cylinder — the abdominal-fat geometry index from 1991. The Conicity Index Calculator is a free, private conicity index tool — every result computes instantly in your browser with no sign-up and no data upload.
About Conicity Index Calculator
Valdez's model: a perfect cylinder of your weight and height would score 1.00, a perfect double cone 1.73. It applies C = waist(m) ÷ (0.109 × √(weight ÷ height(m))). Use the Conicity Index 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 Conicity Index Calculator
- 1Enter your details in the Conicity Index 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 Conicity Index Calculator?
- ✓Instant conicity index 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 (Valdez R, J Clin Epidemiol 1991;44:955-6)
- ✓Free forever with no sign-up, account or app install
Frequently asked questions
How does the Conicity Index Calculator work?+
Valdez's model: a perfect cylinder of your weight and height would score 1.00, a perfect double cone 1.73. The calculation uses the formula: C = waist(m) ÷ (0.109 × √(weight ÷ height(m))). Everything runs instantly in your browser as you type — your inputs are never uploaded.
Is the Conicity Index Calculator accurate, and what is it based on?+
The method is traceable to authoritative sources: Valdez R, J Clin Epidemiol 1991;44:955-6. Results are estimates — individual variation always applies, so treat the output as a well-grounded starting point.
Is the Conicity Index 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 Conicity Index Calculator for?+
It's commonly used for conicity index, c index, abdominal fat index. How close your trunk is to a double-cone vs a cylinder — the abdominal-fat geometry index from 1991.
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