In the United States, the average height for men who are at least 20 years old is around 5 feet 9 inches, with an average shoe size of around 10.5 and a medium width (D). Averages worldwide ...

Usually, men's shoes run 1-1.5 sizes bigger than women's. So if you have your eye on a pair of Chelsea boots from the men's department, snag a size 7 if you're an 8.5 in women's.

We already know that as many as 80% of men are actually wearing the wrong size shoe, it's the biggest problem men have buying shoes, and that there are many ways to tell if your shoes don't fit.