Skip to main content

US Series

Arch A

Arch A

Belonging to the ANSI series, Arch A is a paper size that holds significant importance in various professional fields. With dimensions of 9 x 12 inches, it's a preferred choice for many architects and engineers who require precision and clarity in their blueprints and schematics.

As part of the American National Standards Institute (ANSI) series, Arch A adheres to stringent standards set by this esteemed organization. This ensures consistency across different prints, making it easier for professionals to collaborate on projects without worrying about discrepancies due to varying paper sizes.

Arch A paper dimensions


View All US Series

2A046.81 x 66.221189 x 1682119 x 1683370 x 4768
A120.51 x 0.7113 x 181 x 237 x 51
4A066.22 x 93.621682 x 2378168 x 2384768 x 6741
A110.71 x 1.0218 x 262 x 351 x 74
A101.02 x 1.4626 x 373 x 474 x 105
A3+12.95 x 19.02329 x 48333 x 48933 x 1369
A1+23.98 x 35.98609 x 91461 x 911726 x 2591
A0+35.98 x 50.87914 x 129291 x 1292591 x 3662
A64.13 x 5.83105 x 14811 x 15298 x 420
A55.83 x 8.27148 x 21015 x 21420 x 595
A48.27 x 11.69210 x 29721 x 30595 x 842
A311.69 x 16.54297 x 42030 x 42842 x 1191
A91.46 x 2.0537 x 524 x 5105 x 147
A216.54 x 23.39420 x 59442 x 591191 x 1684
A82.05 x 2.9152 x 745 x 7147 x 210
A123.39 x 33.11594 x 84159 x 841684 x 2384
A72.91 x 4.1374 x 1057 x 11210 x 298
A033.11 x 46.81841 x 118984 x 1192384 x 3370

Interestingly, despite its American origins, Arch A has found acceptance globally. Its unique size offers an optimal balance between space and portability - large enough to present detailed information clearly yet compact enough for easy handling and storage.

Arch A is more than just a paper size. It's an integral tool that facilitates effective communication among professionals across industries. Its adherence to ANSI standards underscores its reliability while its global acceptance testifies its versatility.

Other Formats in the US Series

Interesting facts about Arch A

1: Arch A Paper Size

Arch A paper is a specific size within the Arch series of paper sizes. It measures 9 x 12 inches or approximately 229 x 305 millimeters.

2: Origin of the Arch Series

The Arch series of paper sizes originated in Germany in the early 20th century. It was initially developed for architectural and technical drawings.

3: Standardized by ANSI

In the United States, the American National Standards Institute (ANSI) adopted and standardized the Arch series of paper sizes in 1995.

4: Similar to ANSI A

The dimensions of Arch A paper are very similar to ANSI A (8.5 x 11 inches), which is commonly used for letter-sized documents in North America.

5: Commonly Used by Architects

Architects often prefer using Arch A paper for sketching, drafting, and presenting architectural designs due to its convenient size and aspect ratio.

6: Compatible with Other Arch Sizes

The Arch series follows a consistent aspect ratio, which means that an Arch A sheet can be easily scaled up or down to other sizes within the series without losing proportionality.

7: Popular Choice for Artwork

Artists also find Arch A paper suitable for creating small-scale drawings, paintings, and mixed media artworks due to its manageable dimensions.

8: Not Widely Used Outside North America

The use of the Arch series, including Arch A paper, is primarily limited to North America. In other parts of the world, different paper size standards are more prevalent.

9: Historical Connection to Imperial Paper Sizes

The Arch series of paper sizes has a historical connection to the traditional imperial paper sizes used in the United States and other countries before metrication.

10: Versatile for Various Applications

While Arch A paper is commonly associated with architectural and artistic uses, it can also be utilized for general office purposes, such as printing documents or creating brochures.