

To cover this in more depth… What is a standard paper size? The table below provides a breakdown of the most popular ISO and Arch architectural paper sizes: These sizes are designated by their width, which increases as the size gets larger. The arch paper sizes include sizes such as Arch A, Arch B, Arch C, Arch D, Arch E, and Arch E1. It is also worth noting that the arch paper size standard, which is specific to the United States, is commonly used for architectural drawings in that country. A0 is the largest size and is typically used for printing detailed technical drawings, while A1, A2, and A3 are smaller sizes that are often used for printing architectural plans and elevations.

The most commonly used A series paper sizes for architectural drawings are A0, A1, A2, and A3. This means that each larger size in the A series is half the size of the previous one, and each smaller size is double the size of the next larger size. The dimensions of the A series paper sizes are determined by the ratio between the length and width, which is 1:√2 (approximately 1:1.4). The number indicates the size of the paper, with larger numbers corresponding to smaller paper sizes.
BLUEPRINT PAPER CODE
The A series paper sizes are designated by a code that consists of the letter “A” followed by a number. The A series paper sizes are widely used for printing architectural drawings, blueprints, and other large format documents. The most popular architectural paper sizes are the A series paper sizes, which are part of the ISO 216 standard. What is the typical size of architectural drawings?

In this article, we run through the most commonly used architectural paper sizes in the industry.
BLUEPRINT PAPER MANUAL
Whether it’s manual drafting, CAD, BIM, or 3D, knowing what paper size to use can help you breeze through the final steps of your drawing. Even for digital files, an architectural paper size is extremely useful for defining the extents of the document. No matter what medium you use to create your drawings, the final output will almost always be produced on a standard architectural paper size.
