Ledger sheets, also known as tabloid sheets, have the dimensions of 11 inches, or 279 millimeters, width by 17 inches, or 432 millimeters, length. Though the dimensions of ledger sheets and tabloid sheets are the same, ledger sheets are horizontal, or "landscape," and tabloid sheets are vertical, or "portrait."
Ledger sheets are commonly used for drawings, diagrams and large tables. Ledger/tabloid sheets are part of a range of page sizes called the ANSI/ASME Y14.1 standard, established in 1995 and used exclusively in North America. A ledger sheet cut in half produces a letter or ANSI A size document. Outside of the United States and Canada, a paper sizing standard is used called the ISO, short for International Organization for Standardization. The United States and Canada are the only countries that have not adopted this standard, as of 2015. Other paper sizes within the ANSI/ASME Y14.1 standard include letter (8.5 inches by 11 inches) and legal (8.5 inches by 14 inches).