A Body Shape Index (ABSI)
Mortality risk from waist, BMI and height — independent of BMI.
See how it works
Watch a quick simulation of this tool in action — no file needed.
How to use A Body Shape Index (ABSI)
Follow these steps — everything happens instantly in your browser.
- 1
Step 1. Enter waist circumference at the navel.
- 2
Step 2. Enter weight, height and age.
- 3
Step 3. Read your ABSI, BMI, z-score and relative risk category.
Why use this tool
Frequently asked questions
Everything you might want to know about a body shape index (absi).
Body Fat Calculator
U.S. Navy body fat formula from circumference measurements.
Waist-to-Hip Ratio Calculator
Abdominal fat distribution and cardiovascular risk.
Lean Body Mass Calculator
LBM from Boer, James or Hume formulas.
Ideal Weight Calculator
Four classic formulas — Devine, Hamwi, Robinson, Miller — plus frame adjustment.