Letter (paper size)

Not to be confused with Letter sheet.
Letter paper tiled with equilateral triangles
A Letter-size page
Comparison of Letter (shaded light blue) and Government letter sizes with some similar paper and photographic paper sizes

Letter (officially ANSI A) is a paper size standard defined in ANSI/ASME Y14.1 by the American National Standards Institute, commonly used as home or office stationery primarily in the United States, Canada, and the Philippines, and variably across Latin America.[1] It measures 8.5 by 11 inches (215.9 by 279.4 mm) and is similar in use to the A4 paper standard at 210 mm × 297 mm (8.27 in × 11.7 in) used by most other countries, defined in ISO 216 by the International Organization for Standardization.

  1. ^ "US Letter" is the primary paper size used in Belize, Canada, Chile, Colombia, Costa Rica, El Salvador, Guatemala, Mexico, Nicaragua, Panama, Philippines, Puerto Rico, United States, Venezuela according to "Territory Information". Common Locale Data Repository. 45. 2024-04-16. Archived from the original on 2024-05-03. Retrieved 2024-05-03.