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BRI Calculator

Body Roundness Index

BRI Calculator header

BRI Calculator

The Body Roundness Index (BRI) is a measurement that estimates your body fat distribution based on the roundness of your waist relative to your height. Unlike Body Mass Index (BMI), which only considers weight and height, BRI provides insight into where body fat is stored, especially around the abdomen. This can be crucial, as excess fat around the waist is often linked to higher risks of heart disease, diabetes, and other metabolic conditions.

Please enter a valid height.
Please enter a valid waist circumference.

Your BRI is...

BRIHealth Risk Category
Less than 3.41:Low risk
3.41 - 4.44:No statistically significant risk
4.45 - 6.91:Moderate risk
6.91 and above:High risk

Interpreting Your BRI Value

  • Low Risk (< 3.41):
    Indicates a lean body shape with minimal abdominal fat. This is generally associated with a healthy body composition and low risk of obesity-related health conditions such as cardiovascular disease or diabetes.
  • No Statistically Significant Risk (3.41 – 4.44):
    Reflects a healthy or average range of body fat distribution. While there is no significant increase in health risks, maintaining a balanced diet and regular exercise is important.
  • Moderate Risk (4.45 – 6.91):
    Suggests a higher level of abdominal fat, which may increase the risk of conditions such as metabolic syndrome, type 2 diabetes, or heart disease. Lifestyle modifications are recommended to reduce these risks.
  • High Risk (> 6.91):
    Indicates significant abdominal fat accumulation, strongly associated with obesity-related health conditions. This range requires proactive medical consultation and significant lifestyle changes to improve overall health.

Body Fat Percentage

BRI Formula is based on : Thomas DM, Bredlau C, Bosy-Westphal A, et al. “Relationships Between Body Roundness with Metabolic Risk Factors and Obesity in Adults: The Body Roundness Index.” Obesity (Silver Spring). 2013..
The interpretation of BRI values is derived from: Thomas DM, Bredlau C, et al., Obesity Research Clinical Practice.