The Numbers Game: Board Dimensions Explained

Ever overhead someone talking about their board being "too twitchy" or having "no glide"? It usually comes down to three little numbers printed on the side of the rail. Buying your first board shouldn't feel like a high school math test, so let's break down the FatStick way of looking at dimensions and a few key words.

  • Rail Height
  • Length
  • Max Rider Weight
  • Max PSI

In this blog, we hope to help you understand the size aspects of buying a board.

Width (The "Wobble" Factor): Think of width as your foundation. Most of our beginner-friendly boards sit at 32". Why? Because that extra couple of inches is the difference between standing tall and taking an unplanned swim. A wider board gives you room to move your feet and find your balance, whereas a narrow "racing" board (26-28") is built for speed but will feel like standing on a tightrope.
  • Length (The "Glide" Factor): This determines how the board moves through the water. A shorter board (around 10’6) is nimble and easy to whip around, making it perfect for playing in small waves, fun family paddles and general SUPing. However, if you want to go on a long-distance trek, you want length. A 12’6 board travels further with every single stroke, saving your energy for the scenery.


  • Thickness (The "Float" Factor): Most iSUPs are either 4.7" or 6" thick. At FatStick, we love a 4.7" board because it keeps you closer to the water and is also great for stability. That extra inch of floatation with a 6" board changes the centre of gravity and can make you feel less stable. 

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