How do you measure yourself to determine a snowboard size?

Snowboards are measured in Centimeters such as 147, 151 and many other sizes too. they are small enough for young kids to ride and big enough for the tallest people to ride. A snowboard should be between your chin and nose when it is held vertically on the ground. Personally i like my snowboard smaller than that because it makes it much easier to do tricks in the park such as spins and it is easier to control while in the air.