Medium poster size (18×24)
The standard medium poster (18×24) size is 457.2 × 609.6 mm (18 × 24 inches), or 5400 × 7200 pixels at 300 DPI.
Last updated:
Specifications
| Spec | Value |
|---|---|
| Dimensions (px) | 5400 × 7200 px |
| Aspect ratio | 3:4 |
| Size (inches) | 18 × 24 in |
| Size (cm) | 45.72 × 60.96 cm |
| Size (mm) | 457.2 × 609.6 mm |
| Supported formats | PDF, PNG, JPG, TIFF |
| Color mode | CMYK |
| Bleed | 3 mm (0.118″) |
Print zones
| Zone | Dimensions | Purpose |
|---|---|---|
| Trim | 18 × 24″ | Final cut size |
| Bleed | 18.25 × 24.25″ | Design canvas (extends past trim) |
| Safe area | 17.5 × 23.5″ | Keep text and logos inside this zone |
Medium Poster (18×24) in pixels at different DPI
| Resolution | Width | Height | Use case |
|---|---|---|---|
| 72 DPI | 1296 px | 1728 px | Screen / web |
| 96 DPI | 1728 px | 2304 px | Windows default |
| 150 DPI | 2700 px | 3600 px | Draft print / large posters |
| 300 DPI | 5400 px | 7200 px | High-quality print |
Design at this size with Moda
Start with a canvas pre-set to 5400×7200px and let AI generate your design.
Create a medium poster (18×24) →Design tips
The medium poster size is 18×24 inches (457×610mm). At 300 DPI, that's 5400×7200 pixels. This is a popular size for retail displays, art prints, photography prints, event promotion, and home decor. It's large enough to be impactful but small enough to frame affordably.
- •150 DPI (2700×3600px) is fine for wall posters. Use 300 DPI (5400×7200px) for art prints viewed up close.
- •18×24" has a 3:4 ratio — close to standard photo aspect ratio, so photos fill naturally.
- •Standard frames are widely available for 18×24" at affordable prices.
What you need to know
18×24 is the sweet spot between the small 11×17 poster and the full-size 24×36. It's large enough to be a statement piece on a wall but small enough to fit standard frames and ship flat without excessive packaging costs. Many online poster shops and art print retailers default to 18×24 as their standard offering.
This size is especially popular for photography prints, illustration art, band merchandise, and retail signage. The 3:4 aspect ratio is close to the classic photo ratio, so photos fill the frame naturally without excessive cropping. It's also the size of many vintage-style advertising posters and propaganda reproductions.
For printing, 150 DPI (2700×3600 pixels) is sufficient for posters that will be viewed from a few feet away. Use 300 DPI (5400×7200 pixels) for art prints, photography, or any poster that might be examined closely. CMYK for professional printing; RGB is fine for home inkjet printing.
How to create a medium poster (18×24) at the right size
- 1Open Moda and create a new canvas at 5400×7200 pixels.
- 2Design your medium poster (18×24) using AI generation or start from a blank canvas.
- 3Export as PDF and upload to your platform.
Frequently asked questions
What is 18×24 poster size in pixels?
At 300 DPI: 5400×7200 pixels. At 150 DPI: 2700×3600 pixels. At 72 DPI: 1296×1728 pixels.
What is 18×24 in cm?
18×24 inches is 45.72×60.96 cm (457.2×609.6 mm).
Is 18×24 a standard poster size?
Yes. It's one of the most common poster sizes, widely available at print shops and frame retailers.
Specs last verified: March 19, 2026. Dimensions may change as platforms update their requirements.