18 × 24 print size
A 18 × 24-inch print is 18 × 24 inches (457.2 × 609.6 mm, or 45.72 × 60.96 cm). At 300 PPI it needs 5400 × 7200 pixels.
A poster-like photo size often viewed from a step back.
| PPI | Width (px) | Height (px) |
|---|---|---|
| 150 | 2700 | 3600 |
| 200 | 3600 | 4800 |
| 240 | 4320 | 5760 |
| 300 | 5400 | 7200 |
pixels = inches × PPI
Worked example: 18 × 300 = 5400 pixels wide.
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Frequently asked questions
How many pixels do I need for a 18 × 24-inch print at 300 PPI?
A 18 × 24-inch print at 300 PPI needs 5400 × 7200 pixels. Multiply each side in inches by 300.
Can I print 18 × 24 at 150 PPI?
Yes, but it is below the 200–300 PPI band used for close viewing. 18 × 24 at 150 PPI needs 2700 × 3600 pixels and is more suitable when the print will be seen from farther away.
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