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US Envelope Series



Belonging to the ISO A series, the Booklet paper size is a versatile and widely used format in the world of print. This particular size is designed with an aspect ratio of 1:√2, a characteristic that ensures its dimensions remain consistent when scaled up or down.

The Booklet paper size, also known as A5 when folded from an A4 sheet, measures 148 x 210 millimeters or 5.83 x 8.27 inches. This compact yet spacious format provides ample room for content while maintaining portability and convenience for readers.

Booklet paper dimensions


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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

One fascinating aspect of the Booklet paper size lies in its origins. The ISO (International Organization for Standardization) developed this standardized system to simplify global communication and replication processes. The ANSI (American National Standards Institute), on the other hand, adopted a different approach with their letter sizes but recognized the value of ISO's system and incorporated it into their own standards.

The Booklet paper size has found its niche in various applications such as brochures, catalogs, novels, and even academic journals due to its balance between readability and portability. Its popularity continues to grow as businesses recognize its potential in reaching wider audiences without sacrificing content quality.

Whether you're looking to create an engaging marketing brochure or publish your latest research findings, consider leveraging the power of the Booklet paper size - a testament to thoughtful design meeting practical application.

Other Formats in the US Envelope Series

Interesting facts about Booklet

1: Booklet paper is commonly known as "A4"

Booklet paper, which is widely used for printing booklets, brochures, and documents, is commonly referred to as "A4" size. This term originated from the international standard for paper sizes called ISO 216.

2: A4 size has a fascinating history

The A series of paper sizes was first introduced in Germany in the early 20th century. It was developed by Dr. Walter Porstmann and soon adopted by other countries due to its practicality and efficiency.

3: The aspect ratio of A4 size is unique

A notable feature of A4 size paper is its aspect ratio. The length-to-width ratio of an A4 sheet is exactly √2 (approximately 1:1.414). This property allows easy scaling between different sizes within the A series.

4: Booklet paper comes in various weights

Booklet paper can be found in different weights or thicknesses, typically measured in grams per square meter (gsm). Common weights include 80 gsm, which is standard office-grade paper, and heavier options like 100 gsm or more for a more substantial feel.

5: Booklet paper can have different finishes

In addition to weight variations, booklet papers also come with different finishes that affect their appearance and texture. Some common finishes include matte (non-glossy), glossy (shiny), satin (semi-glossy), and uncoated (natural feel).

6: Booklet papers are often acid-free

To ensure longevity and preservation of printed materials, many booklet papers are manufactured to be acid-free. Acid-free paper is resistant to yellowing and deterioration over time, making it ideal for important documents or archival purposes.

7: Booklet paper can be made from recycled materials

Environmental concerns have led to the production of booklet papers made from recycled materials. These eco-friendly options help reduce waste and minimize the impact on forests by utilizing post-consumer or post-industrial waste fibers.

8: Booklet paper can be water-resistant

In certain applications where durability is crucial, such as outdoor signage or maps, booklet papers with water-resistant properties are available. These papers are designed to withstand exposure to moisture without smudging or disintegrating.

9: Booklet paper can have security features

To prevent counterfeiting and ensure document authenticity, some booklet papers incorporate security features like watermarks, holograms, or special inks that are difficult to replicate. These features add an extra layer of protection for sensitive materials.

10: Booklet paper has a wide range of uses

Booklet paper is not limited to booklets alone. It is widely used for printing various materials such as brochures, flyers, catalogs, manuals, reports, and more. Its versatility makes it a popular choice in the printing industry.