How to Measure Arm Size?

Sarah Jenkins
Sarah Jenkins
• • 5 min read

Sit at a Table and Rest Your Arm on the Tabletop. Make a Fist. Curl Your Forearm up Toward Your Shoulder, as If Doing a Bicep Curl Bicep Curl Keep the Elbows...

How to Measure Arm Size?

Sit at a table and rest your arm on the tabletop. Make a fist. Curl your forearm up toward your shoulder, as if doing a bicep curl

bicep curl
Keep the elbows to the side of the torso and shoulders are fixed, then raise the bar towards shoulder until biceps are fully contracted. Return the bar back to the initial position for another repetition.
› wiki › Biceps_curl
, flexing as hard as you can. Hold the end of a soft measuring tape over the highest point of your biceps and around it so both ends meet to give you your measurement.

Do you measure arm size flexed?

Do not flex your biceps while measuring.

You'll get reliable and consistent measurements if you measure your bicep when it's relaxed. Let your arm hang down beside your body, and keep your muscles relaxed while measuring them.

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What is the size of the arm?

The arm circumference for a normal sedentary person

Around the age of 20-21, the arm reaches its adult size and the average arm circumference is 33.3 cm.

Sarah Jenkins

Sarah Jenkins

Senior Technology Editor & AI Specialist
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Sarah Jenkins is a veteran tech journalist with over 12 years of experience covering artificial intelligence, mobile innovations, and digital ethics. Her insights have appeared in leading technology publications worldwide.