Body Type Calculator

Understanding body types

Body type (somatotype) is a descriptive way to talk about how your frame size, waist ratios, and overall build come together. Most people are a blend of the three primary types. The calculator estimates your dominant type so you can tailor training and nutrition with more context.

What the three somatotypes mean

• Ectomorph: Leaner frame, narrower joints, and lower waist-to-height ratios. Often needs more calories and resistance training to add mass.
• Mesomorph: Athletic, balanced frame with moderate waist ratios. Typically gains muscle and loses fat more readily.
• Endomorph: Rounder build with higher waist ratios. Often benefits from consistent movement and structured nutrition.

How we estimate your type

We combine three elements: frame size (height-to-wrist ratio), waist ratios, and BMI. Together, these measurements help highlight whether you skew more toward leanness, balance, or roundness. If you strength train, your waist ratios may improve even if scale weight stays stable.

Use body type with other tools

Somatotype is only one lens. Pair it with BMI, body fat percentage, and progress photos for the most complete picture. BiteCheck makes it easy to log measurements so you can see how your training and nutrition shift your ratios over time.

Important disclaimer

This calculator provides a general estimate and should not be considered medical advice. Genetics, hormones, and health conditions can influence body composition. If you have concerns, consult a qualified health professional.