What Size Is 22×28? | Poster Dimensions Explained

A 22×28 sheet measures exactly 22 inches wide by 28 inches tall, a large format commonly used for posters, artwork, and A-frame signage in North America.

Whether you are printing a movie poster, framing a piece of art, or planning a sign for a storefront, knowing the exact dimensions of a 22×28 sheet is crucial. This size is a standard in the US but can lead to confusion with metric measurements and framing fit. Here is what you need to know about the size, its equivalents, and what to watch out for.

Exact Dimensions And Metric Conversions

The dimensions of 22×28 are precise. The width is 22 inches (55.88 cm), and the height is 28 inches (71.12 cm). To convert inches to centimeters, you simply multiply by 2.54. This means the surface area is 616 square inches, or about 4.28 square feet.

When working with printing software or digital design tools, you must use the exact metric values to prevent misalignment. A common mistake is rounding 55.88 cm up to 56 cm or 71.12 cm down to 71 cm, which can cause your image to be slightly stretched or cropped. Always input the full decimal value when creating a custom print size. If you are using a tool like the Epson Print App, you can set up a custom 22×28-inch size by creating a new size, saving it as ‘Stanchion,’ and printing at ‘actual size, borderless, single-cut’. Remember to keep the ‘keep proportions’ option selected to avoid distortion.

Framing A 22×28 Print

If you are ready to hang your print, you need a frame marketed as ’22×28′. However, the visible display area is actually smaller than the full sheet. Standard frames have a rabbet—the lip that holds the glass and backing in place—which overlaps the edges by about a quarter-inch. This means the visible artwork area is closer to 21.5 inches by 27.5 inches. The outer frame dimensions are typically 24.5 inches by 30.5 inches.

Before buying a frame, always verify the rabbet depth. Standard frames are about 1 inch deep, which may not accommodate thick canvas art. For deeper artwork, you might need spacers or a custom frame. Also, be aware that many pre-made framing kits include a mat with a 17.5-inch by 23.5-inch opening, designed for smaller 18×24 prints, not your full 22×28 artwork. If you want your print visible edge-to-edge, look for frames that are designed for “flush mount” or “floating” display.

For the best selection of frames that match this exact size, check our guide to the best 22×28 frames for wall art.

Common Mistakes When Using This Size

The most frequent errors people make with this size stem from unit confusion and a lack of understanding of industry standards. Also, 22×28 is not an ISO A-series size (like A1 or A2). It is a North American proprietary standard, sometimes referred to as ‘Double Demy’ in the printing industry. It is larger than an 18×24 poster but smaller than the 24×36 medium poster. It is also distinct from the standard 27×40 movie poster size.

Because it is not a globally standard ISO size, finding custom-cut mats for this format can be more difficult and expensive. Pre-made frames often come with mats cut for smaller prints, so always measure your artwork before buying. Measure the width left to right and the height top to bottom, excluding any borders you wish to hide behind the frame lip.