Body Roundness Index Calculator
Calculate Body Roundness Index from waist circumference and height with the published BRI equation.
Enter or adjust the values above, then calculate.
Body Roundness Index: bRI from Waist & Height
Calculate Body Roundness Index from waist circumference and height with the published BRI equation.
Inputs this tool uses
- Waist circumference
- Height
What you get
Body Roundness Index estimate.
How to use the Body Roundness Index Calculator
- Enter waist circumference, height.
- Select any method, activity level or option shown on this page, then choose Calculate.
- Read the main result together with the supporting values, method, assumptions and limitations below before using the estimate.
How this calculation works
Body Roundness Index uses the published waist-and-height geometry formula with radicand validation.
Example calculation
The sample values loaded into the calculator produce 2.82. This example exists to show how the output is structured; replace the sample values with your own inputs for your calculation.
Assumptions and limitations
- Anthropometric formulas are estimates and can differ from direct clinical measurements.
- Results are educational screening/reference values and do not diagnose health conditions.
Sources and review status
Source set last verified 2026-09-25. No clinician review is claimed unless a real named reviewer is displayed.
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