Movie Posters: What They Are and Which Sizes and Formats to Choose

A movie poster is a printed promotional sheet issued to advertise a film, and the format you buy determines both how it displays and how it fits into a collection. If you want a theater-style centerpiece, a one sheet at 27 x 40 inches is the standard choice; if you're short on wall space or building a themed gallery, mini-posters and postcards are easier to arrange. The main formats you'll encounter are one sheets, mini-posters, odd sizes, and movie poster postcards.

What Counts as a Movie Poster

Movie posters are the printed advertising pieces made to promote a film. They sit alongside other movie memorabilia — lobby cards, stills, press kits — but the poster is the large-format piece meant for display, whether in a theater frame or on a collector's wall.

Just Movie Posters.Com describes itself as a place to "purchase all sorts of movie posters for your collecting and decorating pleasure," and organizes its inventory by format rather than by genre or era. That structure is a useful signal: with posters, format is usually the first decision, because it drives price, framing, and where the piece can physically go.

The Common Formats and Their Sizes

The table below reflects the formats and dimensions listed on the site.

One sheets are split into two alphabetical ranges on the site — A–K and L–Z — which is simply a browsing convenience for a large catalog, not a difference in the product itself. Both ranges are the same 27 x 40 inch format.

One Sheets: The Default Choice

At 27 x 40 inches, the one sheet is the size most people picture when they think of a movie poster. It's the format that fits standard theatrical poster frames, so if your goal is a single framed piece above a sofa or in a hallway, this is the one to start with. The trade-off is space and cost: a one sheet needs a large wall and a frame to match.

Mini-Posters: For Smaller Spaces and Groupings

Mini-posters come in 11 x 17 and 13 x 19 inches. These suit apartment walls, dorm rooms, and gallery arrangements where you want several posters in a row or grid. Because they're smaller, they're also easier to store flat and to swap out seasonally. If you're decorating rather than collecting for rarity, minis give you more visual variety per square foot.

Odd Sizes and Postcards

Odd-sized posters are exactly what the name suggests — pieces that fall outside the standard dimensions, often from specific campaigns, re-releases, or non-US markets. They're worth checking when you're hunting a particular title, but be aware that framing an odd size usually means a custom frame rather than an off-the-shelf one.

Movie poster postcards are the smallest format and work well for themed collections — for example, one postcard per film in a series, mounted together in a single large frame. They're also the most practical format if you trade or mail items.

How to Choose Based on Your Goal

The decision usually comes down to one question: are you collecting or decorating?

• Collecting for a specific title or era: Start with the one sheet, since it's the format most associated with a film's original theatrical release. Check odd sizes too if the standard version is hard to find.
• Decorating a room: Match the format to the wall. One sheet for a focal wall; mini-posters for a row, grid, or narrow space.
• Building a themed set: Postcards or mini-posters let you include many titles without needing a wall the size of a theater lobby.
• Limited storage or frequent moves: Smaller formats travel and store far more easily than a 27 x 40 inch sheet.

A practical example: if you want a single poster for a living room, a one sheet in a 27 x 40 frame gives you the classic look. If you want five posters from one franchise on a bedroom wall, five mini-posters at 11 x 17 will fit in a row where one sheet would not.

Where to Buy Movie Posters

Just Movie Posters.Com sells directly through its own catalog, organized by the formats above, and also lists items for sale on eBay. The site invites email with questions, comments, and wish lists — useful if you're hunting a specific title that isn't currently listed, since wish lists are explicitly welcomed.

The site also maintains Facebook and Twitter channels where it posts film and poster-collecting articles, new listings from both the website and eBay, and quotes. Following those channels is a reasonable way to catch new inventory as it's added.

Two practical notes before buying anywhere:

1. Confirm the exact dimensions of the specific listing, especially for odd sizes, since "poster" alone doesn't tell you what you're getting.
2. Check whether the item is a reprint or an original release piece if that distinction matters to you — it affects both value and how you'd frame and insure it.

The site's own framing is straightforward: it's a place to buy posters for collecting and decorating, with inventory grouped by size so you can browse to the format that fits your wall or your collection.