=CalcFolio

Body Type Calculator

Height and wrist circumference — a quick, commonly used frame-size estimate.

in

Measure your wrist at its narrowest point, just past the wrist bone.

Estimated frame size
Medium

Often associated with a mesomorph tendency — athletic build, responds readily to training.

This wrist-to-height ratio is a simplified, commonly used heuristic — not a rigorous somatotype analysis, which would need multiple skinfold and bone measurements. Most real bodies are a mix of traits, not a single pure type.

A worked example

A male at 5'9" with a 7-inch wrist has a height-to-wrist ratio of about 9.86 — landing in the "Medium" frame category.

Frequently asked questions

Why use wrist circumference for this?

Wrist size is relatively unaffected by body fat or muscle gain — it's mostly determined by bone structure, which makes it a reasonably stable proxy for underlying frame size compared to measurements that change with diet or training.

Are ectomorph/mesomorph/endomorph real scientific categories?

They originate from a mid-20th century somatotype classification system that's since been largely superseded in formal kinanthropometry — but the terms remain widely used informally in fitness culture as a loose, approximate way to describe build tendencies.

This calculator provides a simplified estimate for general informational purposes only, not a rigorous somatotype analysis or medical assessment.