POSTER SIZE / PRINT REFERENCE
18x24 Poster Size Guide
Learn the exact 18x24 poster size in inches and centimeters, its 3:4 ratio, and when this versatile print format works best.
Inches
18 × 24 in
Centimeters
45.72 × 60.96 cm
Aspect ratio
3:4
The 18x24 poster size is a dependable medium format: large enough to read on a wall, but still easy to frame, ship, and print at most local shops. It works especially well when your design needs a clear focal image with a short headline and supporting details below it.
Exact 18x24 poster dimensions
An 18x24 poster is 18 inches wide by 24 inches high in portrait orientation. That equals 45.72 cm wide by 60.96 cm high. Rotating the canvas gives you a 24x18 landscape poster without changing the 3:4 proportion.
Best uses for this poster size
Use this poster size for art prints, event notices, classroom graphics, retail promotions, small movie-style artwork, and framed photography. It gives type more breathing room than 11x17 while staying less imposing than 24x36.
Print setup tips
For a full-bleed print, add the bleed required by your printer before exporting. Keep important text and logos inside a safe margin, and choose a file with enough pixels for the viewing distance. For a sharp 300 DPI file, start around 5400 × 7200 pixels.
Is 18x24 a standard poster size?
Yes. 18x24 inches is a common North American poster and art-print size. Check the printer's trim and bleed requirements, because the finished paper size should stay 18x24 even when the exported file is slightly larger.