what's the height limit?

@Eberk91 As vene said.
but thats kool i thought there was a height cap.

I believe the height limit is 32 million blocks, at which point your game will crash. I could be wrong though. That's just what I have heard in the past

as I mentioned, the limit is not the map or your game but the durability of your tools. So the best way is to use a unbreaking 3 elytra and an unbreaking 3, punch2 & infinity bow. Both without mending!