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International Envelope Series



Belonging to the ISO 216 series, E4 paper size is a unique and often overlooked member of this international standard. With dimensions measuring 200mm x 280mm, it's smaller than the more commonly used A4 size, yet larger than the A5. This makes it an ideal choice for specific applications where neither A4 nor A5 would suffice.

The E series in ISO 216 is primarily designed for envelopes. The E4 paper size, therefore, finds its primary use in envelope creation. It's perfectly suited to house folded documents of A4 size without causing any damage or unnecessary creasing to the contents within.

E4 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

Interestingly enough, while ANSI standards are prevalent in North America, they do not have an equivalent for the E4 paper size. This highlights how ISO standards cater to a wider range of sizes and applications compared to their ANSI counterparts.

In terms of printing and design work, E4 offers a unique canvas that can be leveraged by creative professionals seeking differentiation from standard formats. Its unconventional dimensions can provide an element of surprise and novelty that captures attention – a valuable trait in today's crowded visual landscape.

Overall, while not as widely recognized as its A-series siblings, the E4 paper size holds its own with its distinctive characteristics and niche applications. It serves as a testament to the comprehensive nature of ISO standards that cater to every possible need in document sizing.

Other Formats in the International Envelope Series

Interesting facts about E4

E4 Paper: Weird and Interesting Facts

1. The E4 paper size is not commonly used in most countries, making it quite rare to find. It is part of the ISO 216 international paper size standard but is not widely adopted.

2. E4 paper measures 280 mm × 400 mm, which makes it slightly larger than the more common A3 size (297 mm × 420 mm).

3. The E series of paper sizes was introduced in the early 20th century by Dr. Walter Porstmann, a German engineer who aimed to create a standardized system for paper sizes.

4. The E series follows a geometric progression, where each size is obtained by halving the longer side of the previous size. For example, E2 is half the length of E1, and so on.

5. While A and B series papers are widely used for printing and office purposes, E series papers are primarily used for large-format printing or architectural drawings.

6. In some countries like Germany and Austria, E4 paper may be used for certain official documents or certificates due to its unique dimensions.

7. Despite its limited usage, some artists and designers prefer working with E4 paper due to its distinctive shape and less common availability.

8. The aspect ratio of an E4 sheet is approximately 1:1.4286 (or √2:√3), which means that when folded in half along its longer side, it will retain the same proportions as before folding.

9. Due to its larger dimensions compared to A-series papers, printing on an E4 sheet requires specialized printers capable of handling such sizes.

10. If you ever come across an old architectural blueprint or a vintage technical drawing, there's a chance it might be on E4 paper, as it was historically used for such purposes.