what size is regular printer paper

The most common size for regular printer paper is 8.5 x 11 inches, also known as Letter size paper. This is the default size for most printers, copiers, and fax machines, and is used for a wide range of standard documents, including office documents, letters, and faxes. The second most common size is Legal size paper, which measures 8.5 x 14 inches. The third most common size is 11 x 17 inches, also known as Tabloid or Ledger size.