When it comes to overhead clearance for a fire pit, the minimum you should have is 10 feet. However, if you can swing it, 12-15 feet of clearance is ideal. This will help ensure that your fire pit is safe to use and that there's plenty of room for people to move around it. If you have any doubts about the amount of clearance you have, err on the side of caution and go with a larger fire pit.