Pixels · physical size · density
Print DPI and PPI calculator
Provide any two parts of pixels = inches × PPI and calculate the third locally with exact unit factors.
Three equations, one relationship
DPI and PPI calculator formulas
Pixels = inches × PPI; inches = pixels ÷ PPI; PPI = pixels ÷ inches.
Pixels to print size
3000 × 2000 px at 300 PPI = 10 × 6.666667 in (25.4 × 16.933333 cm).
Print size to pixels
210 × 297 mm at 300 PPI needs 2481 × 3508 px after each dimension rounds upward.
Effective PPI
2400 × 3000 px placed at 8 × 10 in = 300 × 300 PPI.
For image sizing, PPI means pixels per physical inch. Image PPI is not the same measurement as a printer's hardware DPI.
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