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International Envelope Series



Belonging to the ISO 216 standard, R7 is a unique paper size that holds its own significance. This standard, recognized internationally, ensures consistency in dimensions across various paper sizes. The R7 paper size is an integral part of this system.

Measuring 125 x 88 millimeters, the R7 falls under the RA series of ISO 216. This series is specifically designed for raw format applications and offers flexibility in terms of cutting to custom sizes without wasting material.

R7 paper dimensions


View All International Envelope Series

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 aspect ratio of R7, like all ISO 216 paper sizes, maintains a square root of two (√2) ratio. This ingenious design allows for seamless scaling between different sizes within the series. Whether you're enlarging or reducing your document's size, it retains its original proportions perfectly.

Interestingly enough, despite its smaller dimensions compared to popular A4 or Letter sizes, R7 has found its niche use in specific industries such as ticketing and labeling where compactness is key.

While it may not be as commonly used as some other formats in the ISO 216 series or ANSI standards prevalent in North America, the R7 paper size carries distinct advantages that make it indispensable for certain applications.

Other Formats in the International Envelope Series

Interesting facts about R7

1: R7 Paper Size

R7 paper is a lesser-known paper size that measures approximately 80 cm x 113 cm. It belongs to the international standard ISO 216 series, which defines the sizes of paper used globally.

2: Origin of R7

The R series of paper sizes was developed in Germany during the early 20th century. The "R" stands for "raw format," indicating that these sizes were derived from untrimmed raw paper sheets.

3: Aspect Ratio

The aspect ratio of R7 paper is approximately 1:1.4125, which means that its width is about 1.4125 times its height. This aspect ratio remains consistent across all ISO paper sizes.

4: Common Uses

R7 paper is not commonly used in everyday printing or office settings. However, it may find applications in specialized industries such as large-scale art prints, architectural drawings, or industrial design projects.

5: Compatibility with Other Sizes

R7 paper can be easily scaled down to fit smaller ISO sizes within the same series by halving its dimensions while maintaining the original aspect ratio. For example, two sheets of R8 can be created from one sheet of R7 by halving both width and height.

6: Limited Availability

Due to its relatively uncommon usage, finding pre-cut R7-sized papers might be challenging compared to more standard formats like A-series or B-series papers.

7: Customization Options

If needed, printers and manufacturers can produce R7-sized papers on-demand by cutting larger raw sheets to the desired dimensions. This flexibility allows for customization according to specific project requirements.

8: International Recognition

While R7 paper may not be widely recognized, it is still part of the ISO 216 series and holds international standard status. This ensures that its dimensions are consistent and compatible with other ISO paper sizes.

9: Historical Significance

The development of standardized paper sizes, including R7, was driven by the need for efficiency in printing and document handling. The ISO 216 series has greatly simplified paper usage worldwide since its introduction in the early 20th century.

10: Paper Size Evolution

The evolution of paper sizes can be traced back to ancient times when different cultures used various systems. The adoption of standardized sizes like R7 has facilitated global communication, printing, and document exchange throughout history.