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German Series



Belonging to the ISO 216 standard, DIN B9 is a unique paper size that holds its own significance in the world of print and design. This specific format measures 31mm x 44mm, making it one of the smallest sizes in the B series.

What sets DIN B9 apart is its precise aspect ratio. Like all sizes under ISO 216, it maintains an aspect ratio of √2:1. This means when you fold a sheet of DIN B9 in half parallel to its shortest sides, you'll get two smaller sheets with exactly the same proportions as the original.

DIN B9 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

The beauty of this system lies in its scalability. Whether you're working with a large B0 sheet or a tiny DIN B9 piece, you can scale up or down without distorting your design or losing any content.

DIN B9 may not be as commonly used as A4 or Letter from ANSI series but it has niche applications where small dimensions are required. It's often utilized for tickets, labels, and other compact printed materials that require precision and clarity despite their small size.

While DIN B9 might seem insignificant due to its diminutive size, it plays an essential role in maintaining consistency and proportionality across different print formats. Its adherence to ISO 216 standards ensures seamless scalability - a testament to thoughtful design and meticulous planning.

Other Formats in the German Series

Interesting facts about DIN B9

1. The Unusual Size

DIN B9 paper is an uncommon size in the ISO 216 standard series. It measures 125 mm × 177 mm, making it smaller than most other paper sizes.

2. Origin of the DIN Standard

The DIN (Deutsches Institut für Normung) standard for paper sizes was first introduced in Germany in 1922 and later adopted by many countries worldwide.

3. A Niche Use

DIN B9 paper is primarily used for specialized applications such as printing banknotes, postage stamps, or small booklets due to its compact dimensions.

4. Historical Significance

The DIN B9 size was not part of the original series defined by Georg Christoph Lichtenberg in the late 18th century but was added later to accommodate specific requirements.

5. Limited Availability

Due to its niche usage, DIN B9 paper may not be readily available at all print shops or stationery stores. It might require special ordering or customization.

6. Unique Aspect Ratio

The aspect ratio of DIN B9 paper is approximately 1:1.4168, which means that it maintains a consistent proportion when halved or enlarged according to ISO standards.

7. Compatibility with Larger Sizes

DIN B9 can be easily scaled up to larger sizes within the same series, such as DIN A3 (twice the size) or DIN A0 (eight times the size), while maintaining their aspect ratios.

8. Precise Measurements

All ISO standard papers have their dimensions rounded to millimeters with a tolerance of ±1.5 mm to ensure consistency and compatibility across different printing systems.

9. Global Adoption

The ISO 216 standard series, including DIN B9, is widely used in over 150 countries worldwide, making it easier for international communication and document exchange.

10. Environmental Considerations

Using DIN B9 paper or any other ISO standard size helps reduce paper waste as it optimizes the use of raw materials during production and minimizes trimming losses.