Question 1099542
More importantly, you need to know the dimensions of the boxes that go inside the crate. 
Knowing the volume is just not helpful. 
As an example, say you're packing square broom handles and the dimensions of the box are 1 cm x 1 cm x 150 cm. 
If I tell you the box is 150 cubic cm, that's not going to help you since the box wont fit in your crate.