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Canadian Series



Belonging to the ISO 216 standard, P3 paper size is a unique and versatile format. This international standard, recognized globally, ensures consistency in paper dimensions across different countries and industries. The P3 size is part of the larger family of 'P' sizes, designed specifically for posters.

The dimensions of P3 are 329mm x 483mm or 12.9 inches x 19 inches. This makes it an ideal choice for medium-sized posters or large flyers where visibility and impact are key considerations. Its size strikes a balance between being large enough to attract attention yet compact enough for easy handling and distribution.

P3 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, like all ISO paper sizes, the aspect ratio of P3 is √2:1. This unique feature allows for seamless scaling between different sizes within the series without distortion or loss of content proportionality - a testament to the thoughtful design behind this international standard.

In comparison with ANSI series - another widely used standard primarily in North America - there isn't an exact equivalent to P3. However, it falls roughly between ANSI C (17 x 22 inches) and ANSI D (22 x 34 inches), offering a more compact alternative with similar visibility potential.

Whether you're designing an eye-catching poster or creating impactful marketing materials, the P3 paper size offers a versatile solution that adheres to internationally recognized standards.

Other Formats in the Canadian Series

Interesting facts about P3

1: P3 Paper Size

P3 paper is a specific size within the ISO 216 standard for paper sizes. It measures approximately 324 mm x 458 mm, making it slightly larger than the commonly used A3 size.

2: Origin of P Series

The P series of paper sizes was introduced by the International Organization for Standardization (ISO) in the 1970s. It was primarily developed to provide a standardized system for envelopes and folders.

3: Envelope Compatibility

P3 paper is designed to fit perfectly into a C3 envelope, which has dimensions of approximately 324 mm x 458 mm. This compatibility ensures that documents printed on P3 paper can be easily mailed without folding or trimming.

4: Uncommon Usage

P3 paper is not as widely used as other ISO standard sizes like A4 or A3. Its specific dimensions make it less suitable for general printing purposes, leading to its limited popularity among consumers and businesses.

5: Specialty Applications

P3 paper finds its niche in specialized industries such as architecture, engineering, and graphic design. Its larger size allows professionals in these fields to print detailed drawings, blueprints, and technical illustrations with greater accuracy and clarity.

6: Variations Across Countries

The P series of paper sizes varies slightly across different countries. While most countries follow the ISO standards, some have their own unique variations or additional sizes within the P series.

7: Historical Significance

The introduction of standardized paper sizes like P3 played a crucial role in streamlining international communication and document exchange. It eliminated the need for custom-sized envelopes and folders, making it easier to handle and store documents across borders.

8: P3 in Artistic Printing

P3 paper's larger size is often favored by artists and printmakers for creating unique prints, etchings, or lithographs. The extra space allows for more creative freedom and experimentation with different techniques.

9: Limited Availability

Due to its relatively low demand compared to other standard sizes, finding P3 paper may be more challenging than finding commonly used sizes like A4 or letter-sized paper. It is often necessary to order it from specialty suppliers or online retailers.

10: Environmental Considerations

Paper production has a significant impact on the environment. When choosing P3 paper or any other type of paper, it is important to consider options that are certified as sustainable or made from recycled materials to minimize ecological footprint.