How is BAI different from BMI?

BAI doesn't require a weight measurement at all, estimating body fat from body shape (hip-to-height ratio) instead, though it's less validated across diverse populations than BMI.

Body Adiposity Index Calculator

The Body Adiposity Index (BAI) estimates body fat percentage using only hip circumference and height, without requiring a body weight measurement.

Inputs

Results

Body Adiposity Index: 27.1%

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Formula

BAI = (Hip Circumference(cm) / Height(m)^1.5) − 18

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Body Composition Indices Beyond BMI

Body Adiposity Index, BMI Prime, Ponderal Index, waist-to-height ratio, and FFMI — five alternative ways to assess body composition.

Frequently Asked Questions

Related Calculators

BMI Calculator

Calculate your Body Mass Index from your height and weight.

Waist-to-Hip Ratio Calculator

Calculate your waist-to-hip ratio, a measure of body fat distribution.

BMR Calculator

Calculate your Basal Metabolic Rate using the Mifflin-St Jeor equation.

TDEE Calculator

Calculate your Total Daily Energy Expenditure based on activity level.

Body Fat Percentage Calculator

Estimate body fat percentage using the U.S. Navy circumference method.

Ideal Weight Calculator

Estimate ideal body weight using the Devine formula.