The D&D 5E DMG says that the Bag of Holding is 4ft deep. To me this means that the bag is 4ft tall, but I'm wondering if that is simply on the "inside". Though that would mean that items put into the bag can only be 4ft tall/wide depending on which way you put them into the bag. Though, that doesn't quite seem right to me.
In the same sentence the DMG says that the mouth of the bag is 2ft wide, which means that the mouth of the bag can open up for something 2ft in diameter. It's a dimension for the outside of the bah, which would suggest that the 4ft deep aspect is as well. So does this mean that the bag is 4 feet tall?
Best Answer
The DMG states,
This specifies that its outside dimensions are 4 feet long with a 2 foot hole, not its interior space. The mouth is 2ft. in diameter though, which might pose a problem for fitting large objects. So yes, the physical bag is 4' tall.
What's weird about this is that the picture of the bag of holding on DMG 153 does not look like it's anywhere close to those outside dimensions. Instead, it looks like it's wider than it is tall, and it looks more like a small purse than a large bag.
The maximum volume it can hold is 64 cubic feet. If we assume that it's a cube, that's a 4'x4'x4' space. Given that it's an extradimensional space, you can probably fit something much longer inside, as long as the total volume occupied is not more than 64 cubic feet total.