Deciding on how you are planning to use your tipi will always help you determine the best size. Will you have a fire pit on the ground with an open fire? A fire pit is 3 ft. in diameter, and you will need to have space to walk around it, therefore you should not go smaller than a 16 ft. for your tipi size. If you plan to be off the ground in chairs and beds, then the larger tipis from 20 ft. onwards are your better choice. If you plan on sleeping in your tipi in a double bed and having some room for chairs as well, then a 22 ft. will work best. Our most popular size for personal use is the 18 ft., for commercial use it is the 24 ft. size.