The 12×18 Paper Size: Everything You Need to Know

What is a 12×18 Paper Size?

Have you ever wondered what size a 12×18 paper actually is? Well, the answer is right there in the name itself: 12×18 inches. In millimeters, the dimensions are 305 x 457 mm. So whether you’re working with inches or millimeters, the 12×18 paper size has got you covered.

But here’s the thing – the size itself is more popular than the name suggests. That’s because there are other well-known paper names that share the same dimensions. For instance, there’s the Arch B or Architectural B Paper, which belongs to the Architectural paper series and is commonly used for various digital printing projects.

Alternative Measurements for the 12×18 Paper Size

If you prefer using different measurement units, here are some alternatives for the 12×18 paper size:

  • 30.5 x 45.7 cm
  • 0.3 x 0.46 m
  • 864 x 1296 pt
  • 72 x 107.9 pc
  • 3602 x 5398 px

(You can find the conversions for other paper sizes by selecting the desired unit at the top right corner of the Quill And Fox website.)

Printers that Support 12×18 Paper Size

Whether you’re a professional or simply looking to print at home, there are plenty of printers that support the 12×18 paper size format. For instance, provides a helpful article on personal printers that can handle this paper size. If you’re in need of larger-scale printing, consider checking out the professional large format color multifunction printers available at

How is 12×18 Paper Used?

While there are countless paper sizes suited for various printing and copying needs, the 12×18 paper size finds its niche in several applications, including:

  • Booklets
  • Business proposals
  • Advertisements
  • Announcements
  • Posters
  • Frames

It might not be the most popular size out there – that title often goes to the 8.5 x 11 paper size – but the 12×18 format still proves highly useful for many projects. Initially, it gained traction in the architectural industry, being used for planning projects, drawings, and blueprints. Thanks to its aspect ratio of 1:1.5, the 12×18 paper provides a wide surface area that perfectly accommodates architectural projects and other business applications such as booklets, posters, frames, and more. Furthermore, its generous dimensions allow for multiple copies of a design or component, such as invitations or business cards, that can be easily cut from a single print.

Different Names for the 12×18 Paper Size

Although we primarily categorize the 12×18 paper size in the Common US Press Sheet series, it also goes by other names and categories. As a matter of fact, the 12×18 format originated in the architectural industry, leading to the existence of a similar paper size in the Architectural series called Arch B or Architectural B, which shares the same dimensions of 12×18 inches or 305 x 457 millimeters.

Another nearly identical paper size is the Extra Tabloide, which belongs to the Colombian paper series. It measures 12×18 inches or 304 x 457.2 mm.

Choosing the Right Frame for a 12×18 Poster

If you’re planning to frame a 12×18 poster, image, or any other design, it’s essential to get the dimensions right. Instead of opting for a 12×18 frame, consider going for a 13×19 inches frame or larger. Even if you want to add a mat to your frame, make sure it’s 12×18 inches, while the frame itself should be at least 13×19 inches or larger.

Quill And Fox offers a wide range of frames that perfectly complement your 12×18 prints, enhancing their aesthetic appeal.

So there you have it – everything you need to know about the versatile 12×18 paper size. Whether you’re an architect, designer, or simply someone looking to print eye-catching projects, the 12×18 paper size is here to meet your creative needs.