DPI and Print Size Calculator
Convert pixels to centimeters and inches, find DPI and check photo sharpness.
Convert pixels, DPI and print size
- Pixels to size: type width, height and DPI to get centimeters, inches and megapixels.
- Size to pixels: type the target size and DPI to get the exact pixels your file needs.
- Find DPI: type pixels plus size to check if a file prints sharp — 300 DPI is the photo standard.
DPI questions
DPI or PPI — which one matters here?
Same math: screens use PPI, printers use DPI. The tool converts pixels to physical size either way.
How many pixels for a 10 × 15 cm photo?
Use size to pixels: 10 × 15 cm at 300 DPI needs about 1181 × 1772 px. The tool shows both sides at once.
Why pair this with aspect ratio and px-rem?
Ratio locks the shape, DPI locks the size on paper or screen, and px-rem translates it to web type. They link to each other below.