Printer Paper Size: A Complete Guide to Dimensions, Standards & Uses

To make sure you print quality material, determining the appropriate paper dimension to use is critical, depending on your printed item, whether you intend to print letters to be sent out, reports for meetings or presentations, or larger-sized pieces of paper to be hung.

Before selecting the correct printer paper size, make sure your printer supports the paper format you’re using. If you’re experiencing paper feed or printing issues, check out our Printer Troubleshooting Guide. 

How do these-sized pieces of paper differ? How are they measured? What standards and use cases for common paper sizes exist? This entire guide will cover common printer paper sizes, worldwide size standards, and practical use cases for each paper size.

What is Printer Paper Size? 

When printing a document, you might be wondering what size is printer paper?  When referring to printer paper size, you are talking about the physical measurements of a piece of paper; these measurements are expressed in millimeters (mm), centimeters (cm), or inches. Because of the fact that countries across the world use various systems for measuring paper sizes, the two most commonly used paper size systems are the ISO 216 A series paper size classification and the North American paper size classification. If you’re using an HP printer, Canon printer, or Epson printer, paper size options may vary depending on the model and printer settings. Refer to our dedicated troubleshooting guides for model-specific help. 

What is Standard Paper Size

Paper sizes are usually defined by accepted guidelines on how it is to be used for printing necessary documents. Many people have standard printing needs that require printing on a standard paper size. However, many countries have different types of paper standards that are typically used in many regions of the world. In fact, the most common paper standard worldwide (A4) is defined as having a measurement of 210 mm x 297 mm (8.27″ x 11.69″) and is typically used to print documents that will be printed for office use, letters that need to be sent out, reports that need to be presented or materials schools use to provide assignments.

Contrary to the norm, the paper standards differ significantly from region to region because the country/countries follow a different paper size standard. Most of the world follows the ISO 216 A series paper size; thus, North America mainly uses letter-sized paper (8.5″ x 11″; 216 mm x 279 mm) as a standard for printing.

Types of International Paper Sizes According to ISO 216 (A-Series)

Most of the world uses the ISO 216 standard for international printer paper dimensions, which includes the well-known A-series size.

Paper Size	Dimension (mm)	Dimension (inches)	Example Uses
A0	841 x 1189 mm.	A0 = 33.1″ x 46.8″	Posters and technical drawings
A1	594 x 841 mm.	A1 = 23.4″ x 33.1″	Large presentations and charts
A2	420 x 594 mm.	A2 = 16.5″ x 23.4“	Posters and Calendars
A3	297 x 420 mm.	A3 = 11.7” x 16.5”	Brochures and diagrams
A4	210 x 297 mm.	A4 = 8.27” x 11.69”	Letters, reports and other office documents
A5	148 x 210 mm	A5 = 5.83” x 8.27”	Notebooks and flyers
A6	105 x 148 mm	A6 = 4.13” x 5.83”	Postcards and invitations

North America Paper Sizes

The United States and Canada have separate systems for printer page size

 than the rest of the world.

Paper Size	Dimension (inches)	Dimension (mm)	Example Uses
Letter	8.5” x 11”	216  x 279 mm	Office documents
Legal	8.5” x 14”	216 x 356 mm	Contracts & legal documents
Tabloid	11” x 17”	279 x 432 mm	Newspapers and large documents
Ledger	17” x 11”	432 x 279 mm	Account Balance Sheet
Executive	7.25” x 10.5”	184 x 267 mm	Business Documents

Most Frequently Used Sizes of Printer Paper

A4 Paper Size

The A4 paper size is the average printer page size, used worldwide. It can be used for

• Office document
•  School assignment
•  Business letters etc
•  Reports or presentations

A4 dimensions: 210 mm x 297 mm & 8.27” x 11.69” A4

Letter Size Paper

Letter-sized paper is the Standard in Canada and the United States.

Examples Uses:

•  Business correspondence
•  Invoice paperwork
•  Resumes
•  Any general printing

Dimensions: 8.5” x 11” or 216 mm x 279 mm Letter size

Legal Size Paper

Legal-size paper is longer than Letter

How Standard Paper Size is Determined

The purpose of standard paper sizes is to provide some level of consistency in terms of how documents are printed, shared, and created by manufacturers; this has been a big issue in the past due to countries or industries that used their own paper sizes to create documents that would not work with each other and that did not fit into their own printers or for use when producing books. Many international organizations developed a standardized paper size system that countries could begin using to create a standard printer paper size globally.

The most common standard in use today is called the ISO 216, which was developed in Germany by the ISO and other European countries prior to being adopted by other regions around the world.  It uses the A series of paper sizes based on the use of the ratio of 1:√2 providing a simple ratio that allows for the ability of a person to fold or cut a sheet of paper in half without changing the proportions, as well as allowing for easy printing of documents and scaling of products that are printed.

North American paper sizes were based on the traditional printing methods in the US or Canada (Letter 8.5 x 11 inches and Legal 8.5 x 14 inches) and historical office use rather than based on a mathematical ratio of size to size. While the ISO and North American paper size systems continue to co-exist throughout the world, they serve different geographical areas and industries for the purposes of producing standardized documents.

Choosing the Right Size of Paper for Your Needs

When it comes to knowing what size is regular printer page for printing, there are a few factors to consider first: what type of document you are printing and what the document’s intended purpose will be. Most commonly, A4 is the standard size for everyday tasks such as letters, reports, school assignments, and office work around the world. In the U S and Canada, Letter size is the preferred choice. Both A4 and Letter are also practical sizes and provide the best balance between readability and usability when printing.

When considering which paper size is best for your needs, be sure to check your printer’s specifications, your formatting requirements for your document, and any regional standards for the document you’re creating. Using paper that is properly sized will give you professional results, help to minimize printing mistakes, reduce paper waste, and improve overall efficiency.

Best Paper Sizes For Use In A Business Setting

The most frequently used printing paper sizes for a business are A4 and Letter size paper. 

• A4 is the standard size for reports, letters, invoices, and presentations on an international level; 
• Letter-size paper is used routinely in the U S and Canada for day-to-day business documents. 
• Legal-size paper is the standard for contracts and legal documents. 
• A3 paper is best used for printing graphs, spreadsheets, flyers, and anything that needs to be presented in large format.

Best Paper Sizes for Office and Business Use 

Choosing the appropriate printer paper size is critical for producing business and professional documents that are well-formatted, as well as for documenting business operations. Globally, A4 (210×297 mm) is the paper size most commonly used for business documents.  The US and Canada use letter-sized (8.5×11 in) paper for the same purpose, making it the most common size for business correspondence.

Best Paper Sizes for Printing Books and Magazines 

When It Comes to Designing Books or Magazines, the Ideal printer paper dimensions will depend on your publication and target audience. A5 (148×210 mm) is a popular paper size used for novels, journals, and pocket books, as it is small and reader-friendly. A4 (210×297 mm) is commonly used for magazines, catalogs, and workbooks, providing more space for images & text. Large paper sizes, such as A4 or custom sizes, are typically desired for premium publications and coffee-table style books. 

How to Choose the Right Paper Size for the Job 

Choosing the right paper size is necessary for ensuring you have received professional quality business documents, reducing your business’s paper waste, and confirming that the printer is compatible with your printer and document requirements. The appropriate paper size for your printed content will depend on its format and its use after printing. 

• For everyday documents:  You should use A4 or letter-sized paper for reports, letters, invoices, assignments, and general office printing; A4 and letter-sized paper are the standard sizes for most business and personal documents.
• For specialized printing:  You use legal (8.5 inches x 14 inches) size paper for contracts and other official documents requiring more space than 8.5 x 11 inches, while A3 (297 x 420mm) is the size used for presentations, brochures, posters, spreadsheets, and other marketing materials requiring a larger layout.

What Sizes of Paper Does the Printer Support?

Printers are made to work with a variety of different types of paper; however, most printers are designed primarily to work with A4 and 8.5 by 11-inch USA letter size printing. A4 paper (210 x 297 mm) is the most common type of paper for everyday printing of all kinds – documents, reports, letters, invoices, and other everyday things. Office and home printers in the USA and Canada will, by default, use letter-size paper.

Most modern printers will also support additional sizes like legal (8.5 inches by 14 inches) and A3 (297 millimeters by 420 millimeters). Legal printer paper size is commonly used when printing contracts and other official documents that require more than 8.5 x 11 inches of space; A3 is often used for larger printed pieces of material such as presentations, posters, or brochures. Additionally, some printers may support smaller-sized paper like A5 or A6 for printing booklets, flyers, and photographs. Check the specifications for your specific printer model to confirm what size paper your printer supports before beginning the print job. 

Wrap Up

To be able to print professionally and efficiently, it is very important to know about printer paper sizes and standards (dimensions). All printing needs, like business documents, presentations, legal documents, and marketing documents, will improve in compatibility (working together) because of the correct paper size being used for anything printed on. In addition, the printing will have better print quality when the paper size is the correct one to use.

Knowing about International paper standards and common paper sizes should make determining the right size of paper for printing documents a lot easier. 

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