Image Tools
Photo DPI Calculator
Convert between pixel dimensions, print size and DPI, and get a straight answer on whether the file is big enough for the print you want.
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300 is the print-shop standard. 150 is fine for posters seen from a distance.
Largest print at 300 DPI
20 × 13.33 in
Pixels
6000 × 4000
Print size
20 × 13.33 in
at 300 DPI
Sharp. 300 DPI and up is what print shops ask for, and what a photo book or gallery print needs.