Body Type Calculator
Determine your somatotype (ectomorph, mesomorph, endomorph) based on anthropometric measurements using simplified Heath-Carter formulas.
About this Calculator
Determine your somatotype (ectomorph, mesomorph, endomorph) based on anthropometric measurements using simplified Heath-Carter formulas.
Formula & Calculations
Formula
Endomorphy = -0.7182 + 0.1451(X) - 0.00068(X²) + 0.0000014(X³), where X = sum of tricep, subscapular, suprailiac skinfolds (approximated via BMI and wrist/ankle ratios)Where:
- Ecto=Ectomorphy score — lean, linear build with narrow frame
- Meso=Mesomorphy score — muscular, athletic build with broad shoulders
- Endo=Endomorphy score — rounder build with higher body fat tendency
- HWR=Height-to-wrist ratio, used as a frame-size proxy
- AWR=Ankle-to-wrist ratio, used as a robustness proxy
Assumptions
- This is a simplified anthropometric approximation; true somatotyping requires skinfold calipers.
- Body type classifications are continuous — most people are blends of two or three types.
- Wrist and ankle circumferences are used as proxies for skeletal frame size.
Calculation Examples
Example 1
Narrow frame (HWR ≈ 10.9) and lower BMI suggest an ectomorphic tendency. The blend shows some mesomorphic traits.
Example 2
Higher BMI and wrist-to-ankle ratio indicate more endomorphic characteristics with moderate muscularity.
Frequently Asked Questions
Can I change my body type?
Your basic somatotype is largely determined by your skeletal frame and genetics, which cannot be changed. However, you can significantly alter your body composition through diet and exercise — an endomorph can become lean, and an ectomorph can build muscle mass.
What if my results show I'm a blend of types?
Most people are blends. A pure somatotype is rare. If you score within 10-15% across two categories, you're considered a balanced mix of those types. Use the dominant type for general guidance on training and nutrition.
Is the Heath-Carter method the same as this calculator?
The original Heath-Carter method requires measuring skinfolds at three sites with calipers, plus bone breadths and limb girths. This calculator uses height, weight, wrist, and ankle as simplified proxies that correlate with the full method.