How long is the average arm on a person?

A woman’s average arm span is 5 feet 4 inches and a man’s average arm span is 5 feet 9 inches. Normal humans have arms that are the same length as their height. This means that the average arm span is also about the same as the average height, with men having longer arms on average than women.

Not only does the average person’s arm span vary by gender, but it also varies a lot by country and time period. People are getting taller and their arms are getting longer over time. This is called the secular trend of human growth.

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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