BAI Calculator - Body Adiposity Index

Estimate body adiposity index from height and hip circumference.

BAI Calculator - Body Adiposity Index

Health calculator: Choose independent height and hip units. Measure around the widest part of the hips and buttocks while keeping the tape level. The estimate is a screening value, not a diagnosis.

Measurements
BAI=hip circumferenceheight32−18
Body measurement guide showing height, chest, waist, hips, and inseam on adult and child figures.
Place the tape around the widest part of your hips and buttocks. Keep it level and comfortably snug without compressing the skin.

How to use this calculator

Choose independent height and hip units. Measure around the widest part of the hips and buttocks while keeping the tape level. The estimate is a screening value, not a diagnosis.

  1. Choose the calculation mode and units, when available.
  2. Enter values using the localized examples in the placeholders.
  3. Select Calculate and review the result, steps, and visualization when provided.

Formula and method

BAI=hip circumferenceheight32−18

Estimate body adiposity index from height and hip circumference.

Worked example

The placeholders provide a reproducible example. Enter them to verify the result before using your own data.

Assumptions and limitations

Important: Body-composition estimates have population and measurement limitations.

Values must be finite and use compatible units. Displayed decimals are rounded, while calculations retain full precision.

Frequently asked questions

What does this calculator do?

Estimate body adiposity index from height and hip circumference.

Why do fields appear or disappear?

Dependent fields follow the selected method, shape, ingredient, or unit mode.

Are all visible formulas semantic?

Yes. Formulas and structured results use native MathML, with text retained only for labels and copying.