11x17 paper is also known as Tabloid or Ledger size paper. It is a larger size paper that is commonly used in offices that require large-sized drawings or documentation that would not appropriately fit on a standard Letter size paper. The dimensions of 11x17 paper are 11 inches by 17 inches, or 279.4 millimeters by 431.8 millimeters. It is roughly equivalent to the A3 paper size, which is 11.69 inches by 16.54 inches or 297 millimeters by 420 millimeters.