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Chinese Series



Belonging to the ISO 216 international paper size standard, D1 is a unique and versatile paper size. It measures 545 x 779 millimeters or approximately 21.5 x 30.7 inches, making it an ideal choice for various applications.

As part of the D series in the ISO standard, D1 is primarily used for technical drawings such as architectural blueprints and engineering designs. Its large dimensions allow for detailed work and clear presentation of complex information.

D1 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

Interestingly, the ISO 216 standard that includes D1 was first introduced in Germany in 1922 before being adopted internationally. This standard is based on an aspect ratio of √2 - a unique feature that maintains the aspect ratio even when folded in half.

The ANSI series, another popular paper size system particularly in North America, does not include a direct equivalent to D1. This highlights the distinctiveness of this particular paper size within global standards.

With its substantial dimensions and unique place within international standards, D1 serves as an indispensable tool for professionals requiring large format technical drawings.

Other Formats in the Chinese Series

Interesting facts about D1

1: D1 paper is not a standard paper size

D1 paper does not belong to the ISO 216 series, which is the international standard for paper sizes. It is not commonly used or recognized in the printing industry.

2: D1 paper size varies depending on the country

In some countries, D1 refers to a specific size, while in others it may represent a different dimension. The lack of standardization makes it difficult to determine an exact measurement for D1 paper.

3: D1 may be used as shorthand for "Drafting Paper"

In certain architectural and engineering circles, D1 can be used as an abbreviation for "Drafting Paper." This type of paper is typically larger in size and suitable for technical drawings and blueprints.

4: The origin of the term "D" in paper sizes

The letter "D" in various paper sizes (including D1) originates from the German word "Doppel," meaning double. This signifies that each successive size doubles the area of its predecessor within the same series.

5: Non-standard sizes like D1 can lead to compatibility issues

Using non-standard sizes like D1 can pose challenges when it comes to printing and reproduction. Many printers are designed to handle standard ISO sizes, so finding appropriate equipment or adjusting settings might be necessary.

6: Limited availability of pre-cut D1 sheets

Due to its non-standard nature, finding pre-cut sheets of D1 size can be quite challenging. Custom cutting or trimming larger sheets may be required if you specifically need this particular size.

7: D1 paper may have regional significance

In some regions, D1 might be a locally recognized size used for specific purposes. For example, it could be associated with a particular industry or organization that has adopted its own unique paper sizing system.

8: D1 can refer to a specific aspect ratio

While the exact dimensions of D1 paper may vary, it is often associated with an aspect ratio of approximately 1:√2. This means that if one side of the paper is divided by two, the resulting rectangle will have the same proportions as the original sheet.

9: The lack of standardization makes D1 less widely known

Since D1 does not conform to any widely recognized international standards, it remains relatively unknown outside certain specialized fields or regions where it may hold significance.

10: Custom printing and cutting options for D1

If you require D1-sized prints or products, working with professional printers who offer custom printing and cutting services can help fulfill your specific requirements.