Calculate effective PPI for printing
Divide image pixels by the final print size in inches. Use the lower width or height result as the effective PPI after any crop.
Image pixels
Print dimensions
Recommended for detailed print
Pixels needed at 300 PPI
2480 × 3508 px
Maximum size at 300 PPI
256.0 × 341.4 mm · 10.08 × 13.44 in
Effective PPI compares the real image pixels that remain after cropping with the physical dimensions of the finished print.
Use the quality result to decide whether to print smaller, choose a higher-resolution source, or make a proof for a large print viewed from farther away.
Frequently asked questions
How do I calculate effective PPI?
Divide image pixels by the final print dimension in inches for both width and height, then use the lower result.
Does cropping reduce effective PPI?
It can. Cropping removes pixels, so calculate with the pixel dimensions that remain in the final composition.
Can I print below 300 PPI?
Yes, depending on the image, printer, and viewing distance. It may look less detailed at close range.