In this article, we go over the average neck size for males and females, factors affecting your neck size, how to measure your neck size correctly, and health risks associated with your neck size. You could determine your neck size by wrapping a measuring tape around your neck. On the other hand, males with a 14-inch to 14.75-inch neck fall in the “small” category, 14.75 to 15.25 inches is the “medium” size bracket, 15.25 to 16 inches is the “large” group, and folks with a neck bigger than 16 inches can be considered to have a “very large” neck.