The answer to this question depends on what type of exercises you’ll be doing with your gymnastic rings. For the sake of this article, we’re going to assume that yours will be used for strength training and not a gymnastics routine. For this, you want at least a foot or two over one and a half times your height, so you aren’t banging your head on the ceiling when doing dips. For the average person, this means a nine or ten-foot-high ceiling with the rings roughly six feet above the ground. This isn’t ideal, but it’s definitely workable. Higher is better, but if you don't have a ten-foot ceiling, it’s possible to modify some exercises to work in a smaller space.