DPI PPI Calculator
Work out DPI, print size, and pixel dimensions.
Pixels, inches, and DPI
Print resolution ties pixels to physical size: dividing pixel dimensions by DPI gives inches. A 3000-pixel-wide image at 300 DPI prints ten inches wide, the reason 300 DPI is the print standard.
It also works backward: enter the print size you want and the DPI, and it tells you the minimum pixel dimensions your image needs so you do not send a blurry file to the printer.
Screen vs print
Screens are effectively 72–96 PPI, so an image that looks huge on a monitor can print small. The calculation runs on your device with nothing uploaded.
Frequently Asked Questions
How does the dpi ppi calculator work?
PPI is the diagonal pixel count divided by the diagonal size in inches. A 1920 by 1080 screen at 15.6 inches is about 141.2 PPI.
When should I use this tool?
Use it for monitor comparisons, print planning, image sharpness checks, and responsive design notes.
What is the main limitation?
DPI is often used for printers and PPI for screens; this tool calculates pixel density from dimensions.
Is this converter private?
Yes. It runs entirely in your browser, so your values are not uploaded or stored.
More free browser utilities for conversion, formatting, and technical cleanup.