12×18 at 300 DPI
A 12×18-inch print at 300 DPI needs approximately 3,600 × 5,400 pixels.
Quick answer
3,600 × 5,400 px
Print size12 × 18 in
Resolution300 DPI
Megapixels19.44 MP
How this works
Multiply each print dimension in inches by 300 pixels per inch. This gives 3,600 pixels on the 12-inch side and 5,400 pixels on the 18-inch side.
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