Wrist & Ankle Measurement Guide

Accurate measurement of wrist and ankle circumference for the Genetic Muscle Mass Limit calculator

These two measurements determine your bone structure and frame size. Use a flexible measuring tape and measure bare skin without compressing the tissue.

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Why bone structure matters Wrist and ankle circumference reflect the density and size of your skeletal frame. Larger frame = greater potential for muscle mass.
Wrist measurement
1 Wrist Circumference

Measure at the narrowest point of the wrist — just distal to the styloid processes of the radius and ulna.

1 Extend your arm with palm facing up and hand relaxed
2 Locate the narrowest point — just above the wrist joint, below the two bony bumps on the sides
3 Wrap the tape snugly around the wrist — it should be flat but not compressing the skin
4 Read the measurement while keeping the hand relaxed. Record to the nearest 0.1 cm
💡 Typical wrist range: 14-20 cm men, 13-17 cm women. Measure non-dominant hand.
Ankle measurement
2 Ankle Circumference

Measure at the narrowest point of the ankle — just above the malleoli. The tape goes above the bones, not through them.

1 Stand upright with your weight evenly distributed, or sit with the foot resting flat
2 Locate the two ankle bones — use them as a reference point, then position the tape just above them
3 Wrap the tape horizontally just above the ankle bones — this is the narrowest point of the ankle
4 Keep the tape snug but not tight. Record to the nearest 0.1 cm
💡 Typical ankle range: 19-25 cm men, 17-22 cm women. Measure both, use average or larger.

Common Mistakes to Avoid

Measuring over clothing

Always measure bare skin — fabric adds thickness and distorts the reading.

Tape at an angle

Keep the tape perfectly horizontal and parallel to the floor for both measurements.

Compressing the skin

The tape should be snug — touching the skin all around — but not indenting it.

Wrong measurement point

Wrist: narrowest point below the wrist joint. Ankle: narrowest point above the ankle bones, not through them.