Body Type Calculator

The idea of body types, or somatotypes, groups people into three broad builds: ectomorph, mesomorph, and endomorph. It is a useful lens for thinking about how your body naturally responds to training and food, as long as you remember that almost everyone is a blend rather than one pure type.

The three body types

• Ectomorph: naturally lean with a slim frame and narrow shoulders. Often finds it hard to gain weight or muscle.
• Mesomorph: naturally muscular and athletic with a medium frame. Gains muscle and loses fat relatively easily.
• Endomorph: a broader, softer frame that gains muscle well but also stores fat more readily.

How this estimate works

This calculator uses your wrist circumference relative to your height as a simple proxy for frame size. It is a rough hint, not a scientific classification, since true somatotype is a spectrum measured with more detailed methods.

Training and eating for your type

Your type can shift the emphasis of your plan. An ectomorph may need more calories and a focus on progressive strength work to gain size, while an endomorph often does best with tighter calorie control and plenty of activity. That said, the fundamentals, enough protein, smart calories, and consistent training, apply to everyone.

Your type is not your destiny

Your frame is fixed, but your muscle and body fat are not. With the right plan, people of every type transform how they look. SmaartCoach tailors your calories, macros, and workouts to you, then adjusts as your body responds.