Most of the time people ask: What length board is best for me?
Length
Length is measured in centimeters and is sometimes abbreviated to just the last two digits. Hence, a Burton Custom 56 is a snowboard made by Burton that measures 156cm from tip to tail. Kids' boards run as short as 100cm and long race or powder boards can be upwards of 180cm
To find the correct length for you, start by comparing it to your height. When holding the board on its end, a short board will come up somewhere between your collar bones and chin. Because shorter boards are easier to maneuver, they are great to learn on and are preferred by riders who do a lot of trick, park and pipe riding.
A medium length board standing on end will come up between your chin and nose. This length is for the all around intermediate to advanced rider who may ride a variety of terrain, including parks and steeps.
Long boards go from eye-level to several inches over the top of the head. Long boards are for high-speed carving, deep powder and big mountain terrain.
Riders who are heavy for their height can stay within these guidelines, but should look for boards that have a stiffer flex. Lighter riders will need boards with a softer flex. Also, remember that these are general guidelines to get you started; personal preference can also strongly sway your decision of what length board to buy. The weight of the rider is also big factor.