A Body Shape Index (ABSI) Calculator
Waist size normalised for BMI and height — isolates central-fat risk that BMI mathematically cannot see.
Krakauer's insight: regress waist on BMI and height, and what's left over — a waist bigger than your BMI 'predicts' — carries independent mortality signal in NHANES. Typical adult values sit near 0.078–0.082; higher means more centrally-concentrated mass for your size. Use alongside, not instead of, simpler measures.
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.
Waist size normalised for BMI and height — isolates central-fat risk that BMI mathematically cannot see. The A Body Shape Index (ABSI) Calculator is a free, private absi tool — every result computes instantly in your browser with no sign-up and no data upload.
About A Body Shape Index (ABSI) Calculator
Krakauer's insight: regress waist on BMI and height, and what's left over — a waist bigger than your BMI 'predicts' — carries independent mortality signal in NHANES. It applies ABSI = waist(m) ÷ (BMI^⅔ × height(m)^½). Use the A Body Shape Index (ABSI) 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 A Body Shape Index (ABSI) Calculator
- 1Enter your details in the A Body Shape Index (ABSI) 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 A Body Shape Index (ABSI) Calculator?
- ✓Instant absi 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 (Krakauer NY & Krakauer JC, PLoS ONE 2012;7:e39504)
- ✓Free forever with no sign-up, account or app install
Frequently asked questions
How does the A Body Shape Index (ABSI) Calculator work?+
Krakauer's insight: regress waist on BMI and height, and what's left over — a waist bigger than your BMI 'predicts' — carries independent mortality signal in NHANES. The calculation uses the formula: ABSI = waist(m) ÷ (BMI^⅔ × height(m)^½). Everything runs instantly in your browser as you type — your inputs are never uploaded.
Is the A Body Shape Index (ABSI) Calculator accurate, and what is it based on?+
The method is traceable to authoritative sources: Krakauer NY & Krakauer JC, PLoS ONE 2012;7:e39504. Results are estimates — individual variation always applies, so treat the output as a well-grounded starting point.
Is the A Body Shape Index (ABSI) 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 A Body Shape Index (ABSI) Calculator for?+
It's commonly used for absi, body shape index, absi calculator. Waist size normalised for BMI and height — isolates central-fat risk that BMI mathematically cannot see.
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