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Paper sizes are an essential aspect of printing and designing, and different countries have varying systems of paper sizes. In this article, we will discuss the various paper sizes used around the world, highlighting their differences and common uses.

Why Do We Have Paper Sizes?

In the early days, paper sizes were arbitrary and varied from one country to another. In the 19th century, a standard system of paper sizes was introduced in Europe, which was eventually adopted globally. The most popular system of paper sizes is the ISO 216 standard, which is widely used across the world.

ISO Paper Sizes

The ISO paper size system is based on the metric system, with the standard A series being the most widely used. The A series starts with A0, which measures 841 x 1189 mm. Each subsequent size is half the area of the previous size.

Paper Size Comparison Table

To help illustrate the differences between the various paper sizes, here is a comparison table:

SizeMeasurements (mm)Measurements (in)Common Uses
A0841 x 118933.1 x 46.8Large posters, architectural drawings
A1594 x 84123.4 x 33.1Posters, flip charts, presentation boards
A2420 x 59416.5 x 23.4Large drawings, diagrams, calendars
A3297 x 42011.7 x 16.5Sketches, technical drawings, brochures
A4210 x 2978.3 x 11.7Letters, documents, forms, flyers, notepads
A5148 x 2105.8 x 8.3Booklets, pocket-sized notebooks, invitations
A6105 x 1484.1 x 5.8Postcards, small invitations, notecards
A774 x 1052.9 x 4.1Small notecards, labels, business cards
A852 x 742.0 x 2.9Small notecards, tickets, raffle cards
A937 x 521.5 x 2.0Small notecards, tickets, raffle cards
A1026 x 371.0 x 1.5Small notecards, tickets, raffle cards
B01000 x 141439.4 x 55.7Posters, banners, large artworks
B1707 x 100027.8 x 39.4Large drawings, posters, flip charts
B2500 x 70719.7 x 27.8Large diagrams, wall calendars, artworks
B3353 x 50013.9 x 19.7Magazines, catalogs, brochures
B4250 x 3539.8 x 13.9Books, manuals, large brochures
B5176 x 2506.9 x 9.8Books, manuals, notebooks, small brochures
B6125 x 1764.9 x 6.9Notecards, postcards, small books
B788 x 1253.5 x 4.9Small notecards, tickets, tags
B862 x 882.4 x 3.5Small notecards, labels, tags
B944 x 621.7 x 2.4Small notecards, labels, tags
B1031 x 441.2 x 1.7Small notecards, labels, tags

SRA Paper Sizes

In addition to the standard paper sizes, there are also SRA paper sizes which are commonly used in the printing industry. SRA stands for “Supplementary Raw Format A”, and the sizes are slightly larger than their corresponding A size. The extra size allows for printers to have bleed and trim areas.

Here is a comparison table of the standard A paper sizes and their corresponding SRA sizes:

SizeStandard A Measurements (mm)SRA Measurements (mm)Standard A Measurements (in)SRA Measurements (in)
A0841 x 1189900 x 128033.1 x 46.835.4 x 50.4
A1594 x 841640 x 90023.4 x 33.125.2 x 35.4
A2420 x 594450 x 64016.5 x 23.417.7 x 25.2
A3297 x 420320 x 45011.7 x 16.512.6 x 17.7
A4210 x 297225 x 3208.3 x 11.78.9 x 12.6
A5148 x 210160 x 2255.8 x 8.36.3 x 8.9
A6105 x 148113 x 1604.1 x 5.84.4 x 6.3
A774 x 10580 x 1132.9 x 4.13.1 x 4.4
A852 x 7456 x 802.0 x 2.92.2 x 3.1
A937 x 5240 x 561.5 x 2.01.6 x 2.2
A1026 x 3728 x 401.0 x 1.51.1 x 1.6

It’s important to note that while the SRA sizes are slightly larger than their corresponding A sizes, they are primarily used in the printing industry for the purposes of bleed and trim areas. For most standard printing and design projects, the standard A sizes will suffice.


In conclusion, paper sizes play an important role in printing and designing, and it is essential to understand the differences between them. Whether you are printing documents, creating artwork, or designing posters and banners, choosing the right paper size is crucial to achieving your desired outcome. Understanding the differences and common uses of various paper sizes can help you make informed decisions and ensure the success of your project.

Luke Hickman is a printmaker and artist with over 15 years of experience. He studied at Norwich University, graduating with a BA (Hons) Fine Art, and has worked in both the commercial printing and digital marketing industries for over 7 years. Luke's work revolves around the idea of creating art that can illustrate a story with topics covering war, politics and history.

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