About Body Shape Calculator

Who built this

Body Shape Calculator was founded by Naeem Ullah, who built and maintains the site’s calculators, style guides, and Kibbe content. Every article byline on this site links back to this page — if you want to know who wrote something you’re reading, this is it.

Body Shape Calculator is a free web tool that helps people discover their body shape — hourglass, pear, apple, rectangle, and the male equivalents — using either manual measurements or a photo analysed entirely on their own device.

The most common searches we see are people genuinely trying to understand their silhouette so they can shop smarter, dress more confidently, and find styles that work for them. The goal has been to build the most accurate, respectful, and privacy-conscious tool possible, and to back every style recommendation with the same transparent measurement logic used in the calculator itself — not generic advice copied from elsewhere.

How the calculator works

Manual mode uses a percentage-based classification algorithm. You enter your bust (or chest), waist, and hip measurements in centimetres or inches. The calculator compares these proportions against a fixed set of rules — for example, an hourglass shape requires the bust and hips to be within 5% of each other and the waist to be 75% or less of their average. Because the rules are percentage-based, the result is identical whether you measure in cm or inches.

Photo mode (estimate) uses Google MediaPipe — a lightweight AI framework — to detect body landmarks and estimate shoulder, waist, and hip widths from a segmentation mask. This processing happens entirely in your browser using WebAssembly; no image data is ever sent to a server. Photo results are marked as estimates because image quality, pose, and clothing all affect accuracy.

Our values

We are committed to body-positive framing. Body shapes are categories, not rankings. Every shape is equally valid and beautiful, and the purpose of this tool is purely practical: helping you find clothes that fit and flatter your unique proportions.

This tool does not make any claims about health, fitness, or attractiveness. Results are for informational and styling purposes only and should never be interpreted as medical advice.

Sources and editorial process

Every classification rule used on this site — the exact percentage thresholds that separate hourglass from rectangle, or inverted triangle from oval — is disclosed openly rather than hidden behind a “black box” algorithm. You can see the same rules explained in plain language on the body shape by measurements page. Where a page references external research, such as waist-to-hip ratio context on the WHR calculator, it is attributed to its source (e.g. World Health Organization) rather than presented as this site’s own finding. Pages are reviewed and updated when the underlying logic changes — the “Updated” date shown on each guide reflects that.

Questions or corrections

If you spot an error or have a question about how a result was calculated, reach out via the contact page. Corrections are taken seriously, since accuracy is the entire point of a calculator like this.