Medium Poster Size — 18 × 24 in
The 18 × 24 inch medium poster is the most widely used US event poster size — readable from 3–5 metres, standard at most US print shops, and fits common poster frames. At 300 DPI it's 5400 × 7200 pixels. It's the default format for concerts, exhibitions, school events, and retail window promotions.
Specifications
| Pixels | 5400 × 7200 px (at 300 DPI) |
| Millimetres | 457.2 × 609.6 mm |
| Centimetres | 45.7 × 61.0 cm |
| Inches | 18 × 24 in |
| Aspect ratio | 3:4 |
| Colour mode | CMYK |
| Bleed | 0.125 in (3 mm) |
| Safe zone | 0.5 in (12.7 mm) from trim |
Medium Poster (18×24) in Pixels at Different DPI
The pixel count changes with DPI setting — choose the right one for your output.
| DPI | Width (px) | Height (px) | Use |
|---|---|---|---|
| 72 | 1,296 | 1,728 | Screen preview, PDF viewers |
| 96 | 1,728 | 2,304 | Windows screen standard, digital documents |
| 150 | 2,700 | 3,600 | Medium-quality print, home printers |
| 300 | 5,400 | 7,200 | Professional print, commercial offset |
Design Tips
- →18×24 is readable from 4–5 metres — headline type should be 60–80 pt minimum. Avoid placing dense body copy; this format works for headlines and key information, not paragraphs.
- →Standard poster frame sizes (18×24 in) are widely available at US retailers — design within a 17×23 in safe zone if you want content to show clear of the frame border.
- →Print on 80–100 lb gloss coated stock for vivid colour in retail and event environments. Matte stock reduces glare for indoor reading-room contexts.
- →18×24 is close to A2 (420×594 mm / 16.5×23.4 in) but not the same — confirm the format with your print shop to avoid an incorrect size.
How to Make Medium Poster (18×24) Designs in Playyy
Three steps, no design software. Set the size once — from the size options or straight in your prompt — and every design comes out at 5,400 × 7,200 px.
- 1
Open Playyy
Playyy runs in your browser, so there's nothing to download. Sign in and you'll land on the Home page.
- 2
Type your prompt and set the Medium Poster (18×24) size
Describe what you want in the input box on the Home page, then set the size whichever way is quicker. Pick Medium Poster (18×24) from the size options right underneath — print, poster, and social formats are all in that list. Or just say it in your prompt, like "Medium Poster (18×24) at 5,400 × 7,200 px", and Playyy matches it. Either way you get 5,400 × 7,200 px at 300 DPI, with no converting from millimetres or inches.
- 3
Create your Medium Poster (18×24) design and export it for print
Playyy generates the design at the full 5,400 × 7,200 px — that's Medium Poster (18×24) at 300 DPI, the resolution commercial print expects. Allow 0.125 in (3 mm) of bleed and export a print-ready PDF. Colour mode: CMYK.
Create Medium Poster (18×24) designs with Playyy
Type a prompt, pick Medium Poster (18×24) from the size options underneath it, and export at 5400 × 7200 px — no design software needed.
Start designing free →Frequently Asked Questions
What is medium poster size?+
A medium poster is 18 × 24 inches (457.2 × 609.6 mm). At 300 DPI, the canvas is 5400 × 7200 pixels. It's the most common US event poster format — visible from 4–5 metres and available at most print shops.
What is the most common poster size?+
In the US, the most common poster sizes are 18×24 in (medium) and 24×36 in (standard). 18×24 is the most versatile — it fits standard poster frames and prints at most copy shops. 24×36 is used for higher-visibility outdoor and lobby displays.
What is an 18×24 poster used for?+
18 × 24 in is the standard size for retail promotional posters, gig posters, real estate signage, and trade show graphics. It is large enough to carry a photograph and a headline at viewing distances of three to five metres, but still fits standard off-the-shelf frames.
What resolution do I need for an 18×24 poster?+
5400 × 7200 pixels at 300 DPI. If the source photograph is smaller, 150 DPI (2700 × 3600 px) is acceptable for a poster viewed from two metres or more — the eye cannot resolve the difference at that distance, though close inspection will show it.
Will an 18×24 poster fit a standard frame?+
Yes. 18 × 24 in is one of the most widely stocked frame sizes in North America, alongside 16 × 20 and 24 × 36. Allow for a mat if you want the artwork inset — a 2 in mat brings the visible area down to 14 × 20 in.