Free Online Tool

Somatotype Calculator

Estimate your somatotype — ectomorph, mesomorph, endomorph, or balanced/mixed — based on height, weight, and body composition cues. The calculator runs in your browser for instant, private results, with clear notes on what each type means for training and nutrition framing.

Best for: training- and nutrition-aware users wanting a build framework
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Try the Somatotype Calculator

Enter your details below to estimate your somatotype.

Somatotype Calculator

Enter your measurements below to discover your body type. Your data stays in your browser — nothing is sent to a server.
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This tool provides general guidance only and is not medical advice. Consult a qualified professional for any health-related decisions.

How the Somatotype Calculator Works

1

Enter your data

Provide height, weight, and any additional inputs. Same unit system throughout.

2

Composition cues applied

The calculator combines your inputs to estimate the closest somatotype.

3

Get your type

Your result is one of four categories with explanatory notes.

The Four Somatotype Results

Ectomorph

Lean and slender with narrow frame, long limbs, and a fast metabolism. Both muscle and fat gain can be slow.

Mesomorph

Naturally muscular with broad shoulders, defined waist, and balanced metabolism. Responds well to most training.

Endomorph

Rounder build with a wider frame and a tendency to store fat more readily. Slower resting metabolism.

Balanced / Mixed

A blend of two types — for example ecto-mesomorph or meso-endomorph. Most people are blends.

Somatotype vs Body Shape

Somatotype is different from body shape. Body shape describes your silhouette based on circumferences. Somatotype describes your natural build and how your body responds to training and diet.

For silhouette, use the Body Shape Calculator. Both results can be useful in combination — one for fashion and proportion, the other for training and nutrition framing.

Accuracy & Privacy

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Local calculation

Calculations run in your browser. Inputs are never sent to a server.

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Estimate, not diagnosis

Somatotype is a descriptive framework, not a clinical category.

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Re-take anytime

If your composition changes, recalculate — no limit on attempts.

Somatotype FAQs

Can my somatotype change?
Your underlying somatotype is relatively stable, but sustained training and diet changes can shift your expressed type over months.
Which somatotype is best for building muscle?
Mesomorphs typically build muscle most easily, but all somatotypes can gain muscle with consistent progressive overload and adequate protein.
What should an endomorph eat?
A moderate calorie intake with attention to carbohydrate quality — whole grains, vegetables, and lean protein. Resistance and high-intensity work are effective.
How is somatotype different from male body type?
Somatotype is about build and metabolism. Male body type is about shape from shoulder, chest, waist, and hip measurements.
Is somatotype scientifically valid?
The original Sheldon model has limitations. Modern coaches use it as a practical framework, not a rigid biological classification.
Do I need body-fat percentage?
No. The calculator uses height, weight, and composition cues. Body-fat data, if known, can give a more nuanced result.

Related Calculators

Body Shape CalculatorHourglass, pear, apple, rectangle, inverted triangle.Female Body Shape CalculatorDetailed female-specific shape result.Male Body Type CalculatorTrapezoid, inverted triangle, rectangle, triangle, oval.Waist-to-Hip Ratio CalculatorWHR with WHO health-risk category.Complete Body Type GuideAll shapes and types in one reference.

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