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Print ppi table

These tables show the number of pixels required to print at 90, 180 or 360 ppi.

Example>  a 12 x 16 inch image requires 2160 x 2880 pixels to print at 180 dpi.

How much resolution do you need?  I wouldn’t generally recommend printing below 180dpi for photographic prints or artwork, and 360dpi is preferred.  For  further explanation See this article.

360 ppi
Length
Inches mm Pixels
8 203 2880
12 305 4320
16 406 5760
20 508 7200
24 610 8640
30 762 10800
40 1016 14400

 

180 ppi
Length
Inches mm Pixels
12 305 2160
16 406 2880
20 508 3600
24 610 4320
30 762 5400
40 1016 7200

 

90 ppi
Length
Inches mm Pixels
More suitable for larger prints viewed at a distance
24 610 2160
30 762 2700
40 1016 3600
60 1524 5400
80 2032 7200