Here is the best way to figure out what size tent you will need: take a rope into your backyard, some chalk on your driveway, or even some painter’s tape in your living room, and lay out the footprint of the size tent you think you want. Then fill that space with all your gear, your sleeping bags or beds, and chairs or tables you might take with you. Then try moving through your space, laying down, getting dressed, all the things you will want to do once you are actually in the tent. Sine everyone uses their tents slightly differently, there is no one easy answer, but if you do a little work before you order it can make a big difference to your comfort later.