What Size is Letter Paper?
Table of Contents
Letter paper is one of the most commonly used paper sizes in the United States, but do you know what size it is? In this article, we will explore the dimensions of letter paper, its history, variations, and uses. By the end of this article, you will have a thorough understanding of the standard size of letter paper.
Standard Size of Letter Paper

Letter paper, also known as US letter or American letter, is a standard paper size used in North America. The dimensions of letter paper are 8.5 inches by 11 inches, or 215.9 millimeters by 279.4 millimeters. This size provides ample space for printing documents, letters, and other materials.
In comparison with other paper sizes, letter paper is smaller than A4 paper, which is the most common size used in other parts of the world. A4 paper measures 8.27 inches by 11.69 inches, or 210 millimeters by 297 millimeters. Letter paper is also slightly wider than legal-sized paper, which is 8.5 inches by 14 inches. The standardized size of letter paper makes it easy to print, copy, and distribute documents in the United States.
History of the Standard Size of Letter Paper
The origin of the standard size of letter paper can be traced back to the early 18th century. At that time, paper was made by hand, and the size of each sheet varied. In 1921, the American National Standards Institute (ANSI) established a committee to standardize paper sizes in the United States. The committee recommended the size of 8.5 inches by 11 inches, which was later adopted as the standard size of letter paper.
Over time, the size of letter paper has remained the same, although its weight and thickness have varied. The standard weight of letter paper is 20 pounds, but heavier weights of 24, 28, and 32 pounds are also available. Thicker paper is often used for printing resumes, presentations, and other documents that need to make a strong impression.
The international standard for paper sizes is the ISO 216 standard, which is used in most countries around the world. However, the United States and Canada continue to use their own standards for paper sizes, including letter paper.
Variations of Letter Paper Size
While the standard size of letter paper is widely used in the United States, other countries have their own variations of letter-sized paper. In Canada, for example, the size of letter paper is the same as in the US, but it is sometimes referred to as “Canadian letter.” In Mexico, the size of letter paper is slightly different, measuring 8.5 inches by 13 inches.
There are also specialty sizes of letter paper that are used for specific purposes. For example, the size of 8.5 inches by 14 inches is often used for legal documents and contracts. The size of 8.5 inches by 13 inches is used for printing documents that need to be folded in half, such as brochures and newsletters.
In addition to standard and specialty sizes, there are custom sizes of letter paper that can be ordered from printing companies. These custom sizes can be used for unique projects or to fit specific printing needs. However, it is important to note that custom sizes may be more expensive than standard sizes, and they may not be readily available at all printing companies.
Uses of Letter Paper
Letter paper is a versatile size that is widely used in various industries and for different purposes. Some common uses of letter paper include:
Printing Documents
Letter paper is the standard size used for printing documents such as resumes, cover letters, contracts, and agreements. Its size allows for easy readability of the text, making it a popular choice for official documents.
Business Communication
In the business world, letter paper is commonly used for letterheads, company memos, and other official correspondence. Its standardized size ensures consistency in branding and communication.
Educational Materials
Letter paper is also used in schools and universities for assignments, handouts, and other educational materials. Its size is perfect for printing notes, essays, and other school-related documents.
Arts and Crafts
Letter paper can also be used for creative purposes such as creating flyers, posters, greeting cards, and other crafts. Its size makes it easy to fold, cut, and manipulate for various art projects.
Conclusion
In conclusion, understanding the size of letter paper is essential for anyone who wants to create, print, or distribute documents in the United States. Its standardized size ensures consistency and ease of use, making it a popular choice for various purposes. Whether you are printing official documents or creating art projects, letter paper is a versatile size that can meet your needs.