Print size conversion
Pixels to inches calculator
Divide image pixels by the intended PPI to find the physical print size in inches; this calculator also shows the equivalent millimetres.
Print size resultLIVE
Image pixels
Print density
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Physical size at the selected density
4.00 × 6.00 in
Inches
4.00 × 6.00 in
Millimetres
101.6 × 152.4 mm
Pixel dimensions alone do not define a print size. The same 1200 × 1800 pixel image prints at 4 × 6 inches at 300 PPI or 8 × 12 inches at 150 PPI.
Choose the PPI that fits the viewing distance and print detail you need, then compare the calculated size with your intended paper before exporting.
Frequently asked questions
How do I convert pixels to inches for printing?
Divide each pixel dimension by the PPI target. For example, 1200 pixels divided by 300 PPI equals 4 inches.
How many inches is 1200 × 1800 pixels at 300 PPI?
At 300 PPI, 1200 × 1800 pixels prints at 4 × 6 inches.
Does changing PPI create more pixels?
No. PPI changes the intended physical print size; it does not add image detail.