It's pretty easy to choose the correct length snowboard if you follow a few simple rules.
First off, wherever possible go into your local/preferred snowboard shop and speak to one of the staff. If you're in a decent shop, then most of them will have years experience in the snowboarding industry and will be able to point you in the right direction.
When buying your new snowboard, choosing the actual length is one of the last things you should think about and rather you should work out which snowboard is right for you and then choose the correct size for that particular snowboard.
It used to be the case that people would determine the size of their snowboard based on their height but this is not as important as rider weight. Most snowboards have a designated weight range for their snowboards and this is your starting point.
Depending on the model of snowboard you choose and they the type of riding you want you can come up with the perfect size.
As a general rule of thumb, people tend to downsize slightly if they want a jib/freestyle snowboard and upsize if they want a big mountain/freeride snowboard.
Take a look at our Snowboard buying guide or if you want more specific snowboard sizing information then please let us know.
Cheers!
The Snowboard Shop Team.