The weight of a toilet varies depending on its water capacity and its materials, but specifications provided by Lowes reveal that toilets can range in assembled weight from 70 to 120 pounds. On average, the weight varies somewhat between one- and two-piece models.
Toilets are sold as either one complete piece or two pieces that are assembled to create a finished product. In general, two-piece models weigh less than their one-piece counterparts, which tend to weigh in excess of 100 pounds. Two-piece models, by contrast, typically fall in the range of 75 to 90 pounds, with premium models sometimes weighing more.