Body Type Calculator

How Body Type Is Determined Here

This calculator combines two well-established, independent measurements. First, frame size is estimated from the ratio of your height to your wrist circumference, the standard method used in clinical and fitness settings to classify a skeleton as small, medium, or large — a bigger wrist relative to height indicates a larger bone structure, not more body fat. Second, body shape (often described as apple, pear, hourglass, rectangle, or inverted triangle) is derived from the ratio between your bust/chest, waist, and hip measurements, following the same circumference-ratio logic used by the waist-to-hip ratio (WHR) method common in fitness assessments. A WHR above roughly 0.85 (women) or 0.90 (men) suggests more central "apple" fat storage, while a low waist-to-hip and waist-to-bust difference suggests a straighter "rectangle" shape.

Frame Size vs. Body Shape: Two Different Things

It's a common mix-up: frame size describes your skeleton (fixed, doesn't change with diet or training), while body shape describes soft-tissue distribution (which can shift with body composition changes). Someone can have a small frame but an apple-shaped fat distribution, or a large frame with a pear shape — the two measurements are independent, which is why this calculator reports both rather than collapsing them into a single label.

Body Type Is a Starting Point, Not a Diagnosis

Somatotype and shape classifications are useful for buying clothes, picking exercise emphases, or tracking changes over time, but they are a simplification of a complex body and are not a measure of health or fitness by themselves. For a fuller picture, pair this with a body fat percentage calculator and a BMI calculator. This tool is for educational and informational purposes only and isn't a substitute for an in-person assessment by a doctor or qualified health professional.