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Body Roundness Index Calculator

Estimate Body Roundness Index using height and waist circumference.

Body Roundness Index

Calculate Your BRI

Enter your height and waist circumference below.

Measurement tip: Measure waist circumference around the abdomen at approximately navel height, with the tape snug but not compressing the skin.

What BRI Uses

BRI uses height and waist circumference rather than body weight.

Why Waist Matters

Waist circumference can add useful context because body-fat distribution varies between individuals.

How To Use It

Use BRI as one piece of context alongside other measures, not as a diagnosis.

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