Health & Fitness

A Body Shape Index (ABSI) Calculator

Enter waist, height and weight to calculate your body shape index.

By TheCalcTools Updated Formula checked and tested

Your numbers

Your results

ABSI
ABSI
—
BMI
—

A Body Shape Index (ABSI) Calculator by TheCalcTools

How the A Body Shape Index (ABSI) Calculator works

ABSI divides waist circumference (in metres) by BMI to the power 2/3 times height to the power 1/2. It captures how much weight is carried around the waist, beyond what BMI shows.

Typical adult values are around 0.07 to 0.09. Higher ABSI for your age and sex was associated with higher mortality in the original study; z-scores need age- and sex-specific reference tables.

The formula

ABSI = WC ÷ (BMI^(2/3) × height^(1/2)), WC and height in metres

Worked example

Using the default values shown in the calculator:

Waist circumference90
Height175
Weight78
  1. BMI 25.5; ABSI = 0.90 ÷ (25.5^(2/3) × 1.75^0.5) = 0.0786.

Result:

ABSI0.0786
BMI25.5

Frequently asked questions

Is a higher ABSI bad?

In population studies, a higher ABSI relative to people of the same age and sex was linked to higher risk, independent of BMI.

Sources and further reading

Waist-to-Height Ratio CalculatorKeep your waist to less than half your height Body Adiposity Index (BAI) CalculatorEnter your hip circumference and height to estimate body fat with BAI BMI CalculatorCalculate your body mass index (BMI) from your height and weight, see which adult… Body Fat CalculatorEstimate your body fat percentage from a tape measure, using the U.S Ideal Weight CalculatorSee what four classic formulas suggest for your height Healthy Weight Range CalculatorWhat weights fall in the normal BMI range for your height?

More in Health & Fitness · All calculators

This calculator gives general estimates for information and education. It is not medical advice and does not diagnose anything. Talk to a qualified health professional about your own situation. See our disclaimer.