How Long Are Most People’s Arms?

The average arm length of a person is 25 inches. The length varies, though the average length for a young man of average height and health is 25 inches.

Average arm length varies just as much as average height. Most people agree that there is a link between the two. If someone is taller, they probably have longer arms than someone who is shorter.

This relationship isn’t quite the same for kids, whose arms tend to get longer as they grow compared to adults of the same height. For example, a 5-foot-tall child probably has slightly longer arms than a 5-foot-tall adult, assuming the child hasn’t yet reached his or her full height.

Misha Khatri
Misha Khatri is an emeritus professor in the University of Notre Dame's Department of Chemistry and Biochemistry. He graduated from Northern Illinois University with a BSc in Chemistry and Mathematics and a PhD in Physical Analytical Chemistry from the University of Utah.

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