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Photo Printing Equivalents

The table below illustrates the print sizes at 300 and 200 dpi (printer resolution).

Image Dimensions (pixels)Megapixels@300 dpi@200 dpi
640x480.30 MP2.1 x 1.6 inch3.2 x 2.4 inch
1280x1024.78 MP4.3 x 3.4 inch5.1 x 3.6 inch
1600x12802.0 MP5.3 x 4.3 inch8 x 6.4 inch
2048x15363.3 MP6.8 x 5.1 inch10.2 x 7.6 inch
3060x20366.2 MP10.2 x 6.8 inch15.3 x 10.2 inch
3280x328010.0 MP10.9 x 10.9 inch16.4 x 16.4 inch
note - all calculations done using calculators available on this site.
Please note - on this page, Kodak recommends the following image resolution MINIMUMS for the following printed picture sizes:
Print Size Megapixels Image Dimensions
Wallet 0.3MP 640x480
4x5 0.4MP 768x512
5x7 0.8MP 1152x768
8x10 1.6MP 1536x1024
Back to Digital Darkroom Math, click the link.