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A Body Shape Index (ABSI) Calculator

Enter waist circumference (m), BMI and height (m) to get your ABSI.

How to use

  1. Enter your values in the fields above.
  2. Press Calculate to see your result instantly.
  3. Use the Share button to copy a link to your result.

About this calculator

A Body Shape Index (ABSI) was developed to address a known weakness of BMI: BMI alone can't distinguish someone with a lot of abdominal fat from someone with the same weight but a slimmer waist. ABSI corrects for this using the formula ABSI = WC ⁄ (BMI^(2/3) · height^(1/2)), where WC is waist circumference in meters, effectively normalizing waist size against what would be statistically expected for a given BMI and height.

Because abdominal (visceral) fat carries a stronger link to cardiovascular and metabolic risk than overall body mass, epidemiological studies have found ABSI correlates with mortality risk independently of BMI — a high-ABSI person can appear to have a “normal” BMI while still carrying elevated central adiposity risk. Researchers and health-risk assessment tools use it as a complementary measure alongside, not a replacement for, BMI and waist-to-hip ratio.

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