Health Tools

Body Adiposity Index Calculator

Estimate body adiposity index from hip circumference and height using imperial or metric measurements.

Updated April 14, 2026
Free online tool
Planning and research use

Why this page exists

Body-composition screening gets easier when hip size and height turn into one index instead of being compared informally. This calculator helps visitors estimate body adiposity index from hip circumference and height using either imperial or metric inputs.

Interactive tool

Run the estimate

Enter your numbers and read the result first, then use the sections below to understand what affects the outcome.

Calculator

Body adiposity index calculator

Estimate body adiposity index from hip circumference and height using either imperial or metric measurements.

Result

25.64

Estimated body adiposity index based on hip circumference divided by height to the 1.5 power, using the same unit system throughout.

Estimated BAI25.64

Hip circumference used39.0 in

Height used68.0 in

Reference noteMiddle common adult screening range

Using height of 68.0 in and hip circumference of 39.0 in, the estimate comes to a body adiposity index near 25.64.
This calculator uses one standard BAI formula, so it is best treated as a broad body-composition screening estimate.
Use the result as a general reference point only, because health assessment depends on more than one body-composition index.

This is a general body-composition estimate, not medical advice. Body adiposity index is only a screening calculation and should not be treated as a diagnosis.

Planning note

Last updated April 14, 2026. Use this tool to compare scenarios and plan ahead, then confirm important details with the lender, employer, insurer, contractor, or other qualified provider involved in the final decision.

How it works

What the calculator is doing

Choose imperial or metric measurements and enter hip circumference and height.

The calculator converts the values into the standard BAI formula basis.

It shows the resulting body adiposity index and the measurements used.

Understanding your result

This is a general body-composition estimate, not medical advice. Body adiposity index should be treated as a screening number rather than a diagnosis.

Browse more health tools

Examples

Ways people use this tool

Example scenarios help turn a quick estimate into a more useful comparison or planning step.

Turn hip and height measurements into one screening index

A single BAI estimate can be easier to compare over time than looking at two separate measurements alone.

Use imperial or metric inputs

The calculator keeps the unit handling simple so you can use the measurements you already have.

Use it with other body-composition tools

BAI often fits naturally beside body-fat, BMI, lean-mass-index, and body-roundness checks.

FAQ

Common questions

How is body adiposity index calculated here?

The calculator uses one standard BAI formula based on hip circumference and height after converting the measurements into a consistent unit basis.

Why is this only a screening estimate?

Body adiposity index is only one body-composition measure, so it should be interpreted carefully and alongside broader health context.

Is BAI the same as body fat percentage?

No. It is a separate index that may be used as a broad screening estimate, not a direct laboratory body-fat measurement.

Related tools

Keep comparing

Use these related tools to compare nearby scenarios, check a second estimate, or keep narrowing down the right decision.

Health ToolsUpdated April 11, 2026