Body
Body Type Calculator
Estimate your general build tendency based on frame and proportions
Your Measurements
Enter your measurements to discover your body type
Estimate your general build tendency based on frame and proportions
Enter your measurements to discover your body type
The somatotype system classifies body builds into three broad categories: Ectomorph (narrower frame), Mesomorph (broader, more angular frame), and Endomorph (wider, rounder frame). Most people are a combination of types — pure somatotypes are rare.
Important context: Somatotype theory was developed in the 1940s by William Sheldon and has significant methodological limitations. Modern exercise science generally does not use somatotypes as a basis for training or nutrition prescriptions. This tool is useful for general body-frame awareness, not for determining your ideal diet or training split.
| Tendency | Typical Frame | Common Pattern |
|---|---|---|
| Ectomorph | Narrower frame, longer limbs | Often finds gaining weight harder |
| Mesomorph | Broader shoulders, athletic build | Often responds well to strength training |
| Endomorph | Wider frame, rounder build | Often finds losing weight harder |
Note: These are rough frame tendencies, not metabolic diagnoses. Actual metabolic rate depends on lean mass, activity, age, and many other factors — not body type alone.
You can't change your genetic predisposition, but you can significantly alter your body composition through training and nutrition. An endomorph can become lean, and an ectomorph can build significant muscle - it just requires the right approach.
Body typing is a rough frame classification, not an evidence-based training or nutrition system. Most people are a mix of types, and your actual response to training and nutrition depends on many factors this tool cannot measure (body fat, muscle mass, activity level, genetics, training history). Use this for general awareness, then use more specific calculators like TDEE, Macro, or Body Fat for real guidance.
Use our other calculators to understand your body better.
Body Fat Calculator