Letter size is a standard dimension that usually used for a paper. Letter Size included in American based standard of paper size. This size can be determined in unit of measurement in mm (millimeter) and can be converted into other units as well such as cm (centimeter) or inch (inches).

You can see the image illustration of The Letter Paper Size for reference and more detailed below. The dimensions of Letter Paper Sizes according to American standard can be seen in the image in millimeter. To get a value in cm (centimeter), you can convert the value from mm to cm by dividing by 10.

Letter Paper Size (mm, cm, inci)

Letter Paper Size
Letter216 × 27921.6 × 27.98.5 × 11

What is the size of letter paper?

  • Letter Size in mm is 216 × 279 millimeter.
  • Letter Size in cm is 21.6 × 27.9 centimeter.
  • Letter Size in inch is 8.5 × 11 inches.


Letter, Legal and Ledger/Tabloid are by far the most commonly used of these for everyday activities, and the only ones included in Cascading Style Sheets (CSS). Outside of North America, Letter size may also be known as Quarto. US paper sizes are currently standard in the United States and are the most commonly used formats.

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