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B Series



Belonging to the ISO 216 series, B3 paper size holds a unique position in the world of print and design. With dimensions measuring 353 x 500 millimeters or 13.9 x 19.7 inches, it offers an expansive canvas for creative expression.

As part of the B series, B3 is designed to bridge the gap between A and C sizes. This strategic positioning allows it to serve as an envelope size for A3 documents, demonstrating its practical utility in professional settings.

B3 paper dimensions


View All B 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 B3, like all ISO paper sizes, maintains a square root of two (√2) ratio. This ingenious design ensures that when you cut or fold the paper in half along its longest side, you retain the same aspect ratio—preserving the integrity of your designs or text layouts.

Beyond its technical specifications, B3's versatility shines through in various applications. It's widely used for printing posters, diagrams, and large photographs due to its generous surface area. In addition to this, it serves as an ideal choice for creating impactful marketing materials such as brochures and catalogs that demand attention.

In comparison with ANSI standards prevalent in North America, B3 aligns closest with Tabloid or Ledger size (279 × 432 mm). However, it's important to note that while they may seem similar at first glance; subtle differences exist which can impact print outcomes significantly.

In conclusion: The B3 paper size is more than just measurements on a page—it’s a versatile tool that facilitates effective communication and visual storytelling across various mediums.

Other Formats in the B Series

Interesting facts about B3

1: B3 Paper Size

B3 paper is part of the ISO 216 standard, which defines the sizes of paper used globally. It measures 353 x 500 millimeters or approximately 13.9 x 19.7 inches.

2: Origin of B Series

The B series of paper sizes was introduced in Germany during the early twentieth century as an alternative to the A series. The B sizes are based on geometric progression, with each size having dimensions that are exactly half of its larger counterpart in the A series.

3: Enlargement and Reduction

B3 paper can be obtained by either enlarging a B4 sheet or reducing a B2 sheet. Enlarging from B4 to B3 doubles the dimensions, while reducing from B2 to B3 halves them.

4: Common Uses

B3 paper is commonly used for posters, brochures, book covers, and other medium-sized print materials that require more space than standard letter or A4 size.

5: Compatibility with Other Sizes

The aspect ratio of B3 paper is √2 (1:√2), which means it can be easily scaled down to fit smaller sizes like A5 or scaled up to larger sizes like A2 without any waste or excessive cropping.

6: International Adoption

The ISO standard for paper sizes has been widely adopted around the world since its introduction in the early twentieth century. This ensures compatibility and ease of use across different countries and industries.

7: Historical Significance

Paper sizing standards have evolved over time. Before the introduction of ISO 216, different countries had their own paper size systems, leading to confusion and inefficiency in international communication and printing.

8: B Series Expansion

The B series extends beyond B3, with larger sizes like B0 (the largest) and smaller sizes like B10 (the smallest). Each size in the series maintains the same aspect ratio as B3.

9: Paper Weight Considerations

B3 paper is available in various weights or thicknesses, typically measured in grams per square meter (gsm). The weight chosen depends on the specific application and desired durability of the printed material.

10: Environmental Impact

Paper production has a significant environmental impact due to deforestation and energy consumption. Using standardized paper sizes like B3 helps reduce waste by optimizing printing layouts and minimizing trimmings.