Bathtubs are all about relaxation, so you want to make sure you've got enough space for a comfortable soak. Most standard bathtubs are about 60” long and 30” wide—plenty of room to stretch out and relax. If you're tight on space, you might find tubs that are a bit shorter, around 48” in length, but the 60” length is the most common and gives you that extra bit of luxury. Just make sure your tub fits well in your space, leaving enough room around it so you don't feel crowded.