18×24 Poster paper size
18×24 Poster is part of the Photo range (Photo). Commonly used for posters.
18×24 Poster dimensions
457.2 × 609.6 mm
18 × 24 inches · 45.72 × 60.96 cm ·
aspect ratio 3:4
All units
| Unit | Width | Height |
|---|---|---|
| Millimetres | 457.2 | 609.6 |
| Centimetres | 45.72 | 60.96 |
| Inches | 18 | 24 |
| Points (PostScript) | 1296 | 1728 |
Pixel dimensions by resolution
Pixels are not a property of the paper — they depend on the resolution you print at. Build the document at the size you will actually output.
| Resolution | Pixels (W × H) | Use for |
|---|---|---|
| 72 DPI | 1,296 × 1,728 | Screen and web only |
| 96 DPI | 1,728 × 2,304 | Windows screen default |
| 150 DPI | 2,700 × 3,600 | Draft and home printing |
| 300 DPI | 5,400 × 7,200 | Standard for commercial print and print-on-demand |
| 600 DPI | 10,800 × 14,400 | Fine art and high-detail line work |
300 DPI is the number you want in almost every case. Print-on-demand services, Etsy printables and commercial printers all expect it. Exporting at 72 DPI and enlarging does not add detail — it just prints the same pixels bigger and softer.
Other Photo sizes
| Size | mm | inches | px at 300 DPI |
|---|---|---|---|
| Wallet (2×3) | 50.8 × 76.2 | 2 × 3 | 600 × 900 |
| 3.5×5 Photo | 88.9 × 127 | 3.5 × 5 | 1,050 × 1,500 |
| 4×6 Photo | 101.6 × 152.4 | 4 × 6 | 1,200 × 1,800 |
| 5×7 Photo | 127 × 177.8 | 5 × 7 | 1,500 × 2,100 |
| 8×10 Photo | 203.2 × 254 | 8 × 10 | 2,400 × 3,000 |
| 11×14 Print | 279.4 × 355.6 | 11 × 14 | 3,300 × 4,200 |
| 12×12 Scrapbook | 304.8 × 304.8 | 12 × 12 | 3,600 × 3,600 |
| 16×20 Print | 406.4 × 508 | 16 × 20 | 4,800 × 6,000 |
| 24×36 Poster | 609.6 × 914.4 | 24 × 36 | 7,200 × 10,800 |
Common questions
What size is 18×24 Poster in millimetres?
18×24 Poster is 457.2 × 609.6 mm.
What size is 18×24 Poster in inches?
18 × 24 inches, which is 45.72 × 60.96 cm.
How many pixels is 18×24 Poster at 300 DPI?
5,400 × 7,200 pixels. That is the canvas size to use for anything going to a commercial printer. For screen-only use, 72 DPI gives 1,296 × 1,728 px.
What is 18×24 Poster used for?
Posters.