What's My Body Type?
Our AI analyzes your bone structure and muscle distribution to estimate your body type — ectomorph, mesomorph, endomorph, or a blend of the three.
Ectomorph, mesomorph, or endomorph? Upload a full-body photo and our AI analyzes your bone structure, muscle distribution, and overall build to estimate your body type (somatotype) — a classic fitness framework used to guide training and nutrition approaches. Upload your photo below to find out which type fits you best.
Tested by Brooke Tanner · Last updated August 8, 2026
How the Body Type Analyzer Tool Works
The AI evaluates visual proportions — shoulder-to-waist ratio, limb length, muscle distribution, and overall frame — and compares them to the general characteristics of the three classic somatotypes to determine your closest match. Most people are a blend of more than one type.
Getting the Most Accurate Result from the Body Type Analyzer Tool
A full-body, front-facing photo in fitted clothing gives the AI the clearest view of your frame and proportions.
Body Type Analyzer Tool Accuracy & Limitations
Somatotyping is a simplified, decades-old classification system, not a precise scientific measurement — most people don't fit perfectly into one category. Use your result as a general guide, not a rigid label.
The Story Behind the Body Type Analyzer Tool
The somatotype system was developed in the 1940s by psychologist William Sheldon, who classified physiques into three categories and controversially tried to link them to personality traits and temperament. That personality theory has since been thoroughly discredited and is not supported by modern psychology — but the three-category physique framework itself stuck around in fitness culture as a simple, intuitive starting point for thinking about training and nutrition.
| Type | General build | Common training focus |
|---|---|---|
| Ectomorph | Narrow frame, long limbs, fast metabolism | Higher calorie intake, compound lifts, longer recovery |
| Mesomorph | Athletic, naturally muscular frame | Responds well to most training styles |
| Endomorph | Wider frame, higher natural fat storage | Nutrition timing, higher training volume |
In practice almost nobody is a pure type — most people are a blend, which is exactly what modern sports science expects given how much genetics, training history, and nutrition all interact.
Frequently Asked Questions
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