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Calculate your somatotype

Enter the nine Heath-Carter measurements. The triangle on the right updates as you type. No signup, no save, nothing leaves your browser.

Your measurements

All nine fields are required. Stick to the units shown — kilograms, centimetres, millimetres for skinfolds.

Body

Bodyweight in kilograms. One decimal is enough.

Standing height in centimetres, measured without shoes.

Skinfolds

Pinch the fold of skin and subcutaneous fat between thumb and forefinger, then measure with a skinfold caliper at the marked site. Take three readings per site and average them.

Vertical fold halfway down the back of the right upper arm, with the arm hanging relaxed.

Diagonal fold just below the inferior angle of the right shoulder blade, following the skin's natural cleavage line.

Diagonal fold roughly 5–7 cm above the front of the right hip bone, following the natural fold line angled down-and-in.

Bone breadths

Width measured at the bony landmarks of the elbow and knee, using anthropometric calipers pressed firmly against the bone. Take the right side.

Right elbow flexed to 90°, palm up. Measure between the medial and lateral epicondyles of the humerus.

Seated, knee flexed to 90°. Measure between the medial and lateral epicondyles of the femur.

Limb girths

Tape-measure circumferences, corrected by the standard Heath-Carter protocol below.

Right arm raised, elbow flexed to 90°, biceps maximally contracted. Tape sits at the largest circumference, then subtract the tricep skinfold (in cm) from the reading before entering.

Standing, weight even on both feet. Tape sits at the largest circumference of the right calf, then subtract the medial calf skinfold (in cm) from the reading before entering.

About this test

The Heath-Carter somatotype is the most widely used method for classifying human body shape in sports science and anthropology. It reduces a body to three numbers — endomorphy, mesomorphy, ectomorphy — that describe relative fatness, musculoskeletal robustness, and linearity.

Every measurement on this page is part of the standard anthropometric protocol. With practice, the full set takes about ten minutes to record. The calculation runs entirely in your browser; nothing is uploaded.

If you don't have skinfold calipers or anthropometric calipers handy, you can still play with the form using values from the library — but the result will only be as accurate as your inputs.