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Chinese Series



Belonging to the ISO 216 standard, the D5 paper size is a unique and versatile format. This international standard, originating from Germany, has been adopted by most countries worldwide, excluding the United States and Canada who primarily use the ANSI series.

The D5 paper size measures 135mm by 190mm or in inches, approximately 5.3" x 7.5". This makes it an ideal choice for applications that require a compact yet sufficient space for content display. It's commonly used in booklets, flyers, and other print materials where portability and convenience are paramount.

D5 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

What sets D5 apart is its aspect ratio of √2:1. This unique ratio ensures that when you cut or fold the paper in half along its longest side, you retain two smaller sheets with identical proportions as the original. This feature provides consistency across all sizes within the ISO series - a testament to its ingenious design.

Moreover, this specific aspect ratio also contributes to efficient usage of material during printing processes. It minimizes waste while maximizing output - a critical factor in sustainable printing practices.

D5 is more than just a paper size; it's an embodiment of thoughtful design principles aimed at efficiency and sustainability while catering to diverse printing needs.

Other Formats in the Chinese Series

Interesting facts about D5

D5 Paper: Weird and Interesting Facts

1. Origin of D5: D5 paper is part of the ISO 216 international paper size standard, which was first introduced in Germany in 1922. The standard aimed to simplify paper sizes and promote compatibility across different countries.

2. Unique Size: D5 is not a commonly used paper size and is relatively rare compared to other ISO sizes. It measures 176 x 250 millimeters (6.93 x 9.84 inches), making it slightly larger than A5 but smaller than A4.

3. Japanese Influence: The D series of paper sizes, including D5, was primarily adopted by Japan for their JIS (Japanese Industrial Standards) system before being included in the ISO standard.

4. Envelope Compatibility: While not widely used for general printing purposes, D5 size is often utilized for envelopes that can accommodate A5 documents or cards without folding them.

5. Niche Applications: Due to its unique dimensions, D5 paper finds applications in specific fields such as bookbinding, where it can be used for creating small-sized books or notebooks with a distinctive look and feel.

6. Limited Availability: Compared to more popular sizes like A3 or A4, finding pre-cut sheets of D5 paper might be challenging as it may require special ordering from specialized stationery suppliers or custom cutting services.

7. Notebook Inserts: Some notebook manufacturers offer inserts specifically designed for the D5 size, catering to individuals who prefer this particular format for their writing or note-taking needs.

8. Artistic Possibilities: The unique dimensions of D5 paper can inspire artists and designers to create unconventional layouts or compositions, allowing for innovative and eye-catching presentations.

9. Compatibility with A Series: D5 paper is part of the ISO 216 series, which means it maintains the same aspect ratio as other sizes in the A series. This allows for easy scaling and resizing between different ISO sizes without distorting the content.

10. Global Variations: While D5 is not widely used outside Japan, some countries have their own variations of this size within their national paper size standards, reflecting regional preferences and requirements.