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International Envelope Series



Belonging to the ISO 216 standard, B7 is a unique paper size that holds its own significance in the world of print and design. This particular size measures 88mm by 125mm, or in imperial units, approximately 3.5 inches by 4.9 inches.

As part of the B series in the ISO standard, B7 is designed to bridge the gap between A series sizes. The dimensions of B7 are geometrically determined by taking the geometric mean of consecutive A series sizes. This mathematical precision ensures consistency across all paper sizes within this internationally recognized system.

B7 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

B7's compact size makes it an ideal choice for various applications where space efficiency is paramount. It's commonly used for passport photos, tickets, and other small format printing needs.

Interestingly enough, despite its smaller stature compared to other paper sizes in the ISO series like A4 or B4, B7 doesn't compromise on quality or versatility. Its dimensions allow for clear readability while maintaining a compact footprint - a testament to its thoughtful design within the ISO framework.

Whether you're designing a ticket stub or printing passport photos, choosing B7 as your paper size ensures consistency and efficiency without sacrificing readability or quality.

Other Formats in the International Envelope Series

Interesting facts about B7

B7 Paper: Weird and Interesting Facts

1. The B7 paper size is part of the ISO 216 standard, which was first introduced in 1975. It is commonly used for creating small booklets, brochures, and pocket-sized notebooks.

2. B7 paper measures 88 x 125 mm or approximately 3.5 x 4.9 inches. It has a surface area of 11,000 square millimeters.

3. The B series of paper sizes is based on the geometric mean ratio (√2), which means that each size is half the area of the next larger size in the series.

4. B7 paper is often used for printing miniature versions of documents or designs that need to be portable and easily carried around.

5. Despite its small size, B7 paper can still accommodate a significant amount of content when folded or bound together as a booklet.

6. In some countries like Japan, B7 paper is commonly used for creating small manga comic books due to its compact dimensions.

7. The ISO standard for paper sizes was originally based on a German standard called DIN (Deutsches Institut für Normung) introduced in the early 20th century.

8. Before the introduction of standardized paper sizes, different regions and industries had their own unique sizing systems, leading to confusion and inefficiency in international communication and document exchange.

9. The adoption of ISO standard sizes like B7 has greatly facilitated global trade and communication by providing consistent guidelines for printing and document production across different countries.

10. While A-series papers are more commonly used worldwide, B-series papers are often preferred for certain applications where folding or binding into smaller formats is necessary while maintaining readability and usability.