Skateboard 8.0" means that the width of the skateboard is 8 inches, and the length is not fixed. Most 8.0 skateboards have a length of 31.75”, but depending on the brand, shape and bending length, their size is different, and the length may be longer to 32.35 inches, the shorter may be 30.75. In addition, if it is an electric longboard, its length will be longer.