How big is a cubic foot? – Picking the right size roof box for you.

this image shows what 3 cubic feet look like

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It can be difficult for us to visualize just how much space we need when looking for a roof box.

So we found a visual comparison that will help! If you see the picture. That is a 3 foot cubic box. 

Now of course a roof rack is going to have curvature so it isn’t going to look the same, but the volume will be the same. 

1 cubic foot = 7.48052 US Liquid Gallon. Pretty much any cargo box over 10 cubic feet will be able to fit 3 snowboards or more if you’re looking for a comparison.


I'm the owner of Beast Auto. I live in Phoenix, Arizona. I love anything automotive related, and taking road trips all across my beautiful state.

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