DPI / PPI Calculator
Check whether an image has enough pixel density for the print size you want.
Use the free DPI / PPI Calculator
This tool runs locally in your browser. Your selected image is not uploaded to this website.
How the result works
PPI describes pixels per inch in a digital image or print calculation. DPI technically describes printer dots, although the terms are often used interchangeably in print workflows. This calculator reports effective pixel density from one pixel dimension and one physical measurement.
- Calculate using the same side of the image and print
- Check both width and height when proportions differ
- Do not confuse metadata DPI with actual pixel detail
Common questions
What is the difference between DPI and PPI?
PPI measures image pixels per inch, while DPI refers to printer dots per inch. Many print services use DPI when asking for image pixel density.
Does changing DPI metadata add detail?
No. Real print quality depends on the available pixel dimensions relative to physical size.
Is 300 PPI always required?
It is a common high-quality target, but larger prints viewed from farther away may look acceptable at a lower density.