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International Envelope Series



Belonging to the ISO 216 series, the C0 paper size is a unique and versatile format. It measures an impressive 917 x 1297 millimeters, making it one of the largest sizes in this internationally recognized standard. The ISO 216 series, which includes A, B, and C sizes, is based on an aspect ratio of √2 (approximately 1:1.414), ensuring that each subsequent size retains the same proportions when halved or doubled.

The C0 paper size plays a crucial role in envelope dimensions. Specifically designed to accommodate A-series paper without folding or creasing, it's ideal for sending large documents such as blueprints or design plans. This compatibility between A and C series is a testament to the thoughtful engineering behind ISO standards.

C0 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, despite its substantial dimensions, C0 isn't commonly used in everyday applications due to its sheer size. However, it finds its niche in specialized fields like architecture and engineering where large-scale drawings are required.

While not part of the ANSI series - an American standard that uses lettered designations instead - C0 holds its own with its unique characteristics within the ISO framework. Its distinctiveness lies not just in its size but also in how it seamlessly fits into a system designed for efficiency and interoperability.

While you may not encounter a piece of C0 paper every day; when you do come across one – whether it's housing an architectural plan or serving as an oversized envelope – remember that there's more than meets the eye with this intriguingly large format.

Other Formats in the International Envelope Series

Interesting facts about C0

The Origins of C0 Paper

C0 paper is part of the ISO 216 standard, which was first introduced in Germany in 1922. It was developed as a way to standardize paper sizes and make printing and paper usage more efficient.

Size Comparison

C0 paper measures 917 mm x 1297 mm, making it one of the largest sizes in the ISO 216 series. To put it into perspective, C0 is four times larger than A1 paper and sixteen times larger than A4 paper.

Architectural Uses

C0 paper is commonly used by architects for creating large-scale drawings and blueprints. Its size allows for detailed plans to be easily visualized and shared with clients or construction teams.

Transportation Challenges

Due to its large dimensions, transporting C0 paper can be quite challenging. Special packaging or tubes are often required to protect the integrity of the sheets during transit.

Artistic Possibilities

C0 paper provides artists with a vast canvas for their creations. Its size allows for grandiose artwork that can make a powerful visual impact when displayed in galleries or exhibitions.

Paper Weight Considerations

When using C0 paper, it's important to consider its weight due to its large surface area. Heavier weights are often preferred to prevent wrinkling or tearing when handling such large sheets.

Printing Limitations

Not all printers are capable of handling C0-sized sheets. Specialized printers with wide-format capabilities are required to accommodate this particular size.

Eco-Friendly Alternatives

To reduce waste and promote sustainability, some individuals opt for digital alternatives instead of printing on C0 paper. Digital displays and projectors can be used to showcase large-scale designs without the need for physical prints.

Collaborative Projects

C0 paper is often used in collaborative projects where multiple individuals contribute to a single artwork or design. Its size allows for different sections to be worked on simultaneously, resulting in a cohesive final piece.

Historical Significance

The introduction of standardized paper sizes, including C0, revolutionized the printing industry. It enabled easier communication and exchange of documents across borders, contributing to globalization and international collaboration.