A Body Shape Index (ABSI) Calculator for Overweight Adult

Suitable for assessing central obesity and health risk in an overweight adult with higher waist circumference.

Calculates A Body Shape Index (ABSI) to estimate abdominal obesity risk based on waist circumference, weight, and height. Enter your Weight, Height, Waist Circumference to get an instant a body shape index (absi). Formula: waist / (pow((weight / pow(height, 2)), 2/3) * pow(height, 0.5)).

kg
Min: 1 kg
meters
Min: 0.1 meters
meters
Min: 0.1 meters

A Body Shape Index (ABSI)

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A Body Shape Index (ABSI)

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How It Works

How It Works

The A Body Shape Index (ABSI) calculator estimates abdominal obesity risk using your weight, height, and waist circumference. It combines these measurements into one formula to understand how your waist size compares to your overall body size.

First, the calculator computes your Body Mass Index (BMI) using your weight and height. Then, it adjusts your waist measurement based on your BMI and height to produce a single ABSI value.

  • Step 1: Calculate BMI = weight ÷ (height²)
  • Step 2: Raise BMI to the power of 2/3
  • Step 3: Multiply by the square root of height
  • Step 4: Divide waist circumference by that result
  • Final output is a single ABSI number

Understanding the Results

The ABSI value is a unitless number that reflects how large your waist is relative to your height and weight. It focuses on abdominal fat rather than total body weight.

Higher ABSI values generally indicate a greater concentration of abdominal fat compared to body size. Lower values suggest a more proportionate waist measurement.

  • The result is a single numeric value (no units)
  • Higher values may suggest higher abdominal obesity risk
  • Lower values suggest a more balanced body shape
  • Use alongside other health measures for better insight

Disclaimer

This health calculator is for informational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Disclaimer.

Created by CalcLearn Team Reviewed for accuracy Last updated: Apr 15, 2026

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