Body Type Calculator
The Three Body Types
Ectomorph
Long, lean frame with narrow shoulders and hips. Fast metabolism, difficulty gaining weight.
Mesomorph
Athletic, muscular build with broad shoulders and narrow waist. Gains muscle easily.
Endomorph
Wider build with larger bone structure. Gains weight easily, slower metabolism.
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Understanding Body Types (Somatotypes)
The concept of somatotypes was developed by psychologist William Sheldon in the 1940s. While originally linked to personality traits (which has been debunked), the physical classification of body types remains useful for understanding how different bodies respond to diet and exercise.
How Measurements Determine Body Type
- Wrist circumference: Indicates frame size and bone structure
- Ankle circumference: Another indicator of skeletal frame
- Shoulder-to-hip ratio: Determines upper body dominance
- Waist measurements: Indicates fat distribution tendencies
Training by Body Type
| Body Type | Training Focus | Nutrition Focus |
|---|---|---|
| Ectomorph | Heavy compound lifts, limited cardio | High calories, frequent meals |
| Mesomorph | Varied training, responds to most | Balanced macros, moderate calories |
| Endomorph | HIIT, strength training, regular cardio | Lower carbs, portion control |
Important Note
Most people are a combination of body types rather than purely one type. Body type is also not destiny - with proper training and nutrition, anyone can achieve their fitness goals regardless of their natural body type. Use this as a starting point, not a limitation.
Frequently Asked Questions
What are the three body types (somatotypes)?
The three body types are ectomorph (lean, long frame, fast metabolism, difficulty gaining weight), mesomorph (athletic, muscular build, gains muscle easily), and endomorph (wider build, larger bone structure, gains weight easily). Most people are a combination of two or more types rather than purely one.
Can I change my body type?
Your skeletal structure and natural tendencies are largely genetic, but you can significantly change your body composition through diet and exercise. An endomorph can become lean and athletic, and an ectomorph can build substantial muscle. Body type influences how you respond to training, not what you can ultimately achieve.
How should I train based on my body type?
Ectomorphs benefit from heavy compound lifts with limited cardio and high calorie intake. Mesomorphs respond well to varied training and balanced nutrition. Endomorphs often do best with a combination of strength training and regular cardio, with attention to portion control. However, individual variation matters more than body type alone.
Is the body type theory scientifically proven?
The original somatotype theory linking body types to personality has been debunked. However, the physical classifications remain useful as general guidelines for understanding how different bodies tend to respond to diet and exercise. Modern sports science acknowledges body type differences while emphasizing that training adaptations are highly individual.