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German Series



Belonging to the ISO 216 standard, DIN C4 is a paper size that holds significant importance in the world of documentation and correspondence. This particular size, measuring 229 x 324 mm, is part of the C series under this globally recognized standard. The unique aspect of DIN C4 lies in its perfect fit for an A4 sheet without folding or an A3 sheet folded once.

The ISO 216 standard, which DIN C4 adheres to, is a direct result of the German Institute for Standardization's (DIN) efforts. This international standard has been adopted by numerous countries worldwide, excluding Canada and the United States who follow ANSI series instead.

DIN C4 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

One intriguing fact about DIN C4 is its calculated dimensions derived from a simple mathematical formula: each successive paper size in the series (A, B, C) is half the size of the preceding one when folded parallel to its shorter sides. Hence, it's no coincidence that an A3 sheet fits perfectly into a DIN C4 envelope.

DIN C4's practicality extends beyond mere document storage. It serves as an ideal medium for direct mail marketing due to its noticeable size compared to regular letters. Its dimensions allow marketers to include promotional materials such as brochures or flyers without having to fold them excessively or compromise their presentation quality.

DIN C4 isn't just another paper size; it's a testament to thoughtful design and practical application in both professional and marketing contexts.

Other Formats in the German Series

Interesting facts about DIN C4

1: The Origin of DIN C4 Paper

DIN C4 paper is part of the DIN (Deutsches Institut für Normung) series, which was first introduced in Germany in 1922. It is based on the metric system and has become widely adopted globally.

2: Standardized Dimensions

The dimensions of DIN C4 paper are standardized at 229 x 324 millimeters (9.02 x 12.76 inches). This size allows for easy folding into a C5 envelope without any trimming required.

3: Ideal for A4 Documents

DIN C4 paper is designed to perfectly fit an unfolded A4 document, which measures 210 x 297 millimeters (8.27 x 11.69 inches). This makes it an ideal choice for mailing or storing A4-sized materials.

4: Commonly Used for Business Correspondence

DIN C4 envelopes are commonly used for business correspondence, as they can accommodate unfolded A3 documents or folded A2 documents. Their size provides ample space for professional letters, invoices, and other important documents.

5: Efficient Printing and Copying

The dimensions of DIN C-series papers are carefully chosen to minimize waste during printing and copying processes. By using standard sizes like DIN C3 or DIN C5 instead of custom sizes, businesses can optimize their paper usage and reduce costs.

6: Part of a Comprehensive Series

The DIN series includes various paper sizes such as A-series (A0 to A10), B-series (B0 to B10), and C-series (C0 to C10). Each size within the series has a specific aspect ratio and is derived from the A0 size, which has an area of one square meter.

7: International Adoption

The DIN paper sizes have been adopted by many countries worldwide, including most of Europe, Australia, and South Africa. However, some countries like the United States and Canada still primarily use their own paper size standards.

8: Easy Scaling Between Sizes

One interesting feature of the DIN series is that each size can be easily scaled to the next or previous size by halving or doubling its dimensions. For example, two sheets of DIN C5 paper placed side by side will form a sheet of DIN C4.

9: Compatibility with Printing Equipment

DIN C-series papers are compatible with various printing equipment and can be easily handled by most printers and copiers. Their standardized dimensions ensure smooth feeding and reliable output quality.

10: Historical Evolution

The development of standardized paper sizes dates back to ancient times when different cultures had their own preferred formats. The modern concept of standardization emerged in the early 20th century to facilitate international communication and streamline paper usage across industries.