BMI (Body Mass index) and BRI (Body Roundess Index) indicate your health risk based on height, weight and/ waist line

Why Use Both?
  • BMI focuses on total body weight relative to height, but it does not differentiate between fat and muscle mass.
  • BRI considers fat distribution and is a better indicator of body composition and related health risks.
  • Together, they provide a more comprehensive health assessment. For example:
    • High BMI and Healthy BRI: Likely muscular.
    • High BMI and High BRI: Overweight or obese.
    • Low BMI and Low BRI: Underweight and possibly malnourished.
BRI & BMI Calculator

BRI & BMI Calculator

Results
BMI (Body Mass Index)
  • Definition: A measure of body fat based on your weight relative to your height. It’s a quick and straightforward way to assess whether your weight is in a healthy range.
  • Formula: BMI=weight (kg)height (m)2BMI = \frac{\text{weight (kg)}}{\text{height (m)}^2}BMI=height (m)2weight (kg)​
  • Ranges:
    • Underweight: BMI < 18.5
    • Normal weight: BMI = 18.5–24.9
    • Overweight: BMI = 25–29.9
    • Obese: BMI ≥ 30
  • Meaning:
    • Lower BMI values suggest being underweight, which may indicate malnutrition or other health risks.
    • Higher BMI values indicate overweight or obesity, which are associated with increased risks of heart disease, diabetes, and other health conditions.
BRI (Body Roundness Index)
  • Definition: A newer metric that estimates body fat and health risks based on waist circumference and height. It provides a more direct measure of body fat distribution compared to BMI.
  • Formula: BRI=364.2−365.5×1−(waist circumference (m)2π×height (m))2BRI = 364.2 - 365.5 \times \sqrt{1 - \left(\frac{\text{waist circumference (m)}}{2\pi \times \text{height (m)}}\right)^2}BRI=364.2−365.5×1−(2π×height (m)waist circumference (m)​)2​
  • Ranges:
    • Healthy: BRI < 4.9
    • At Risk: BRI ≥ 4.9
  • Meaning:
    • A healthy BRI suggests appropriate body fat levels.
    • A high BRI indicates excess fat and potential health risks, especially related to visceral fat (fat around internal organs).
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