Body Type & Somatotype Calculator
Determine whether your morphology is Ectomorph, Mesomorph, Endomorph, or a hybrid, along with your skeletal frame size and central fat distribution.
Balanced athletic build with natural muscular definition, moderate bone structure, and responsive metabolic rate.
Somatotype Training & Nutrition Profiles
Evidence-based physiological adaptations and dietary recommendations by dominant somatotype:
Ectomorph (Lean / Fast Metabolism)
Slender bone structure, longer limbs, fast resting metabolism, higher carbohydrate tolerance.
- • Diet: Higher carbs (50–55%), moderate protein (25–30%), calorie surplus for hypertrophy
- • Training: Heavy compound resistance training, moderate volume, low cardio to avoid excess calorie burn
Mesomorph (Athletic / Muscular)
Broad shoulders, narrow waist, dense bone structure, high motor unit recruitment efficiency.
- • Diet: Balanced 40% carbs, 30% protein, 30% healthy fats; responsive to mild deficits/surpluses
- • Training: Periodized strength and hypertrophy, explosive plyometrics, Zone 2 conditioning
Endomorph (Broad / Calorie Efficient)
Larger skeletal frame, thicker joints, efficient fat storage, lower insulin sensitivity.
- • Diet: Lower carbohydrates (20–35%), higher protein (35–40%), healthy fats (30–35%)
- • Training: High-density circuit training, HIIT, consistent daily step count (10k+ steps), Zone 2 cardio
Body Type & Somatotype FAQs
What is the Heath-Carter Somatotype system?
The Heath-Carter Somatotype method (1967) is the internationally standardized scientific system for quantifying human physique morphology across three continuous components: Endomorphy (relative adiposity), Mesomorphy (musculoskeletal development), and Ectomorphy (relative linearity and slenderness).
Can an individual change their somatotype through diet and training?
While your bone structure (skeletal frame size and joint circumference) is genetically determined, your expressed somatotype score changes dynamically as you gain lean skeletal muscle (increasing mesomorphy) or reduce adipose tissue (decreasing endomorphy).
How is bone frame size clinically measured?
Skeletal frame size is determined by the ratio of height to wrist circumference (the anthropometric frame index) and bicondylar bone breadths, which remain constant regardless of fluctuations in body fat or water retention.
Why are Waist-to-Height (WHtR) and Waist-to-Hip (WHR) ratios valuable?
Meta-analyses (Ashwell et al., 2012) prove that Waist-to-Height Ratio is a superior predictor of cardiovascular and metabolic risk than BMI alone, as it directly screens for central visceral adiposity surrounding vital organs.
Scientific References & Peer-Reviewed Literature
- Heath BH, Carter JEL. (1967). A modified somatotype method. American Journal of Physical Anthropology, 27(1), 57–74. PMID: 6079979.
- Carter JEL, Heath BH. (1990). Somatotyping: Development and Applications. Cambridge Studies in Biological and Evolutionary Anthropology, Cambridge University Press. ISBN: 978-0521351171.
- Ashwell M, Gunn P, Gibson S. (2012). Waist-to-height ratio is a better screening tool than waist circumference and BMI for adult cardiometabolic risk factors: a systematic review and meta-analysis. Obesity Reviews, 13(3), 275–286. PMID: 22106927.
