Choose a direction
Select print size, required pixels or effective PPI.
FREE IMAGE DPI / PPI CALCULATOR
Free Image DPI/PPI Calculator
Convert between pixels, print size and image PPI in either direction.
Your image and values are never uploaded or stored.
- 1Choose calculation
- 2Enter values
- 3Copy result
2 · Enter values
Pixels → print size
Find physical print size from pixel dimensions and target PPI.
3 · Copy result
Calculation result
Choose a calculation and enter values to see the result.
The image and print area have different ratios. Filling the area may crop the image or leave empty space.
This is a mathematical guide. Actual quality also depends on the printer, paper, resampling and viewing distance.
Free DPI/PPI calculation guide
Plan print dimensions in three steps
Calculate for free in your browser with no signup or installation.Enter known values
Enter pixels, PPI, physical size and inches, cm or mm.
Use the result
Review dimensions and ratio warnings, then copy the result.
Understand PPI and DPI
How do pixels relate to print size?
The same image has a different effective PPI at every print size.
Pixels divided by PPI
Divide pixels by PPI to get the print length in inches.
Pixels stay unchanged
This calculator does not alter the image file or pixel count.
PPI is not printer DPI
PPI describes image pixels; DPI describes printer dots.
FREE IMAGE DPI / PPI CALCULATOR FAQ
DPI/PPI calculator FAQ
Learn about free use, calculations and print-quality limits.1Is this DPI/PPI calculator free?
Yes. It is free with no usage limit or account required.
2Are PPI and DPI the same?
Not exactly. PPI measures image pixels per inch, while DPI measures printer dots per inch. This tool calculates image PPI.
3Does setting 300 PPI improve image quality?
No. Changing a number alone does not create pixels. You need resampling or a larger source when there are not enough pixels.
4Is my image uploaded?
No. Your browser reads only its natural dimensions and never sends the file to our server.