Print Resolution Calculator
Calculate photographic print size from image pixels and target PPI, or check effective PPI for a desired print width.
Calculate photo print size from pixels
Convert image pixel dimensions into maximum print dimensions at a chosen PPI and check a custom print size.
How the Print Resolution Calculator works
Printed image resolution is measured in pixels per inch. With resampling turned off, print width equals pixel width ÷ PPI and print height equals pixel height ÷ PPI. This tool also works in reverse for a chosen print width by calculating the effective PPI from the existing pixel dimensions.
How to use this print resolution calculator
Enter the image’s native pixel width and height, then a target PPI such as 300 or the value recommended by your print lab. The maximum-size result shows the physical dimensions that use those pixels without resampling. Enter a desired width to see the matching height and effective resolution for that print size.
How to interpret the result
PPI is not the same as a printer’s hardware DPI. Adobe’s print guidance treats image resolution and printer resolution as related but distinct concepts. A lower PPI can still look excellent at a larger viewing distance, while a close-viewed fine-art print may benefit from more source detail and careful sharpening.
Assumptions and limitations
The calculator does not judge image quality, focus, noise, demosaicing, interpolation or sharpening. Cropping reduces available pixels, and borderless printing may enlarge/crop slightly. Some labs resample automatically. Always confirm a provider’s preferred pixel dimensions, color space and sharpening workflow for critical output.
Practical example and workflow
A 6000 × 4000 image printed at 300 PPI is 20 × 13.33 inches without resampling. If you want a 30-inch-wide print from the same file, effective resolution becomes 200 PPI. That comparison helps you decide whether the larger print is acceptable for its intended viewing distance.