To measure your hat size, wrap a tape measure around your head just above your ears. The tape should fit comfortably – not too tight. Round up to the nearest size.
If you have no tape measure, you can measure with a string, which you then measure with a ruler.
Head Size (cm)
Head Size (Inch)
Generic Hat Size
The baseball cap is probably the type of cap that people use the most today. It began to be used in the early 20th century to protect baseball players from the sun and has since become a very strong popular cultural symbol. It is made up of several sewn-together pieces of fabric, but has a tighter fit and a larger screen than, for example, the Newsboy cap.