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Photographic Series



Belonging to the ISO 216 standard, the 24L paper size is a unique and often overlooked member of this globally recognized series. This specific size, while not as commonly used as its A4 or A3 counterparts, holds its own distinctive appeal and utility.

The dimensions of the 24L paper size are precisely defined by the ISO 216 standard. This ensures consistency across different manufacturers and regions, making it a reliable choice for various applications. The meticulous precision in its measurements contributes to its professional appeal.

24L 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 aspect ratio of all ISO paper sizes, including 24L, is √2:1. This unique characteristic allows for seamless scaling between different sizes within the series without distortion or loss of content proportionality. It's an ingenious design feature that enhances usability and versatility.

Despite being less prevalent than other sizes in everyday use, 24L has found a niche in specialized industries such as engineering or architecture where precise scale drawings are required. Its unique dimensions make it ideal for these specific applications.

While it may not be your everyday go-to paper size like A4 or Letter from ANSI series, the 24L offers distinct advantages that make it stand out within the ISO family. Its precise dimensions and unique aspect ratio provide versatility and consistency that can be leveraged across various professional fields.

Other Formats in the Photographic Series

Interesting facts about 24L

1: The Origin of 24L Paper

24L paper is part of the ISO A series, which was first introduced in Germany in the 1920s. It was developed to provide a standardized system for paper sizes.

2: Dimensions of 24L Paper

The dimensions of 24L paper are 178 x 229 millimeters or approximately 7 x 9 inches. It is slightly larger than a standard letter-sized paper.

3: Common Uses

24L paper is commonly used for various purposes such as printing booklets, brochures, flyers, and small posters. Its compact size makes it convenient for creating portable documents.

4: Compatibility with Other Sizes

The ISO A series follows a specific ratio where each size is half the area of the next larger size. Therefore, two sheets of 24L paper placed side by side will have the same dimensions as one sheet of A3 (297 x 420 mm) paper.

5: Historical Significance

Prior to the introduction of standardized sizes like the ISO A series, different countries had their own unique paper sizes. This made it difficult to exchange printed materials internationally without resizing or cropping them.

6: Global Adoption

The ISO A series has been widely adopted around the world and is now used in over one hundred countries as the standard for office and printing papers.

7: Mathematical Precision

The dimensions of each size in the ISO A series are based on an aspect ratio called √2 (square root of two). This ensures that when you fold a paper in half, the resulting halves will have the same proportions as the original sheet.

8: Paper Weight Considerations

24L paper is available in various weights, typically measured in grams per square meter (gsm). The weight chosen depends on the specific application and desired durability of the printed material.

9: Environmental Impact

The ISO A series promotes efficient paper usage by providing a range of sizes that minimize waste. By using standardized sizes like 24L, it becomes easier to optimize printing layouts and reduce overall paper consumption.

10: Paper Evolution

The development of standardized paper sizes has greatly influenced printing technology and design practices. It has allowed for more efficient production processes and facilitated international communication through printed materials.