Body Roundness Index Calculator
A shape-based index of visceral fat from waist and height.
Your result
Higher BRI values reflect rounder bodies with more central fat. Bands shown are approximate guides from population studies.
Medical disclaimer: This tool is for education and is not medical advice. Read more.
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Frequently asked questions
What does the Body Roundness Index Calculator do?
A shape-based index of visceral fat from waist and height. Enter your values and the result and chart update instantly.
How accurate is it?
It uses published, widely used formulas. Results are estimates for education and planning, not a diagnosis. Talk to a qualified clinician about decisions affecting your health.
Is my information stored or shared?
No. All calculations run in your browser and nothing you type is sent to a server or saved.
What can I search to find this tool?
People find it by searching for: visceral fat estimate; better than bmi; belly shape risk.