Free calculator
Image DPI & Print Size Calculator
Check whether an image is sharp enough to print: maximum print size at 300 dpi, pixels needed for a target size, and effective resolution.
—Max print size
—Max print size (mm)
—Pixels needed for target
—Effective resolution
How it works
Printers ask for images at 300 pixels per inch at final size. Line art and text rendered as images look best at 600–1200 ppi. Upscaling a small image does not add detail.
Frequently asked questions
What size image do I need for a 6 x 9 in full-bleed cover?
The front cover with bleed is 6.125 x 9.25 in, so at least 1838 x 2775 pixels at 300 ppi.