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International Envelope Series



Belonging to the ISO 216 series, E3 is a unique paper size that holds its own significance. This international standard, adopted across the globe except in North America, is based on an aspect ratio of √2, which maintains the paper's proportions even when scaled up or down.

The E3 paper size measures 400 x 280 millimeters or 15.75 x 11.02 inches. It's part of the E series under ISO 216, designed specifically for envelopes to accommodate A and B series paper sizes. The E3 size is particularly suited to contain unfolded A4 sheets or A3 sheets folded once.

E3 paper dimensions


View All International Envelope 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

While not as commonly used as its A-series counterparts, E3 offers a unique advantage in specific applications due to its dimensions and aspect ratio. For instance, it's often utilized in graphic design and professional printing where precision and adaptability are paramount.

Interestingly enough, despite being part of an international standard system (ISO), E3 does not have an equivalent in the ANSI series used predominantly in North America. This fact underscores the distinctiveness of this particular paper size within global standards.

While it may not be your everyday go-to choice for printing needs at home or office, understanding the specifics about E3 can open up new possibilities for creative and professional endeavors that require flexibility and precision.

Other Formats in the International Envelope Series

Interesting facts about E3

E3 Paper: Weird and Interesting Facts

1. Origin of the Name:

The term "E3 paper" refers to a specific type of paper size that is commonly used in Europe. The "E" in E3 stands for "Europe," indicating its regional association.

2. Standardized Size:

E3 paper measures 329mm x 483mm, making it slightly larger than the commonly used A3 size (297mm x 420mm). It provides more space for printing or design purposes.

3. Envelope Compatibility:

E3 paper is often used for creating envelopes due to its larger dimensions. It allows for easy folding and fitting of standard-sized documents without excessive trimming.

4. Popular Choice for Posters:

Due to its larger size, E3 paper is a popular choice for printing posters, promotional materials, and visual displays that require more significant impact and visibility.

5. Historical Evolution:

The E series of paper sizes originated from the German DIN standard (Deutsches Institut für Normung) introduced in the early 20th century to promote uniformity in paper sizes across Europe.

6. Series Continuity:

The E series follows a consistent ratio between each size, with each subsequent number being half the area of the previous one. For example, E2 is half the area of E1, and so on.

7. Limited Availability:

< p>E3 paper may not be as readily available as standard A-series papers since it caters to specific needs such as large-format printing or specialized envelope production. p >< p >8 . Customization Possibilities: p > < p >E3 papers can be easily cut down to smaller sizes, such as A4 or A5, if required. This flexibility allows for customization based on specific project requirements. p >< p >9 . International Variations: p > < p >While E3 paper is commonly used in Europe, other regions may have their own equivalent sizes. For example, the United States uses a similar size known as "Tabloid" (11 x 17 inches). p >< p >10 . Environmental Considerations: p > < p >When choosing E3 paper or any other type of paper, it's essential to consider its environmental impact. Opting for recycled or sustainably sourced papers can help reduce deforestation and promote eco-friendly practices.