Print size & upscale factor calculator
Enter your image size, or drop the image (it isn’t uploaded). See how big it prints as it is, and how much you’d need to upscale for each standard print size.
| Print size | Pixels needed | Upscale factor | Verdict |
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How it works
Pixels needed = print size × ppi on each side. The print is matched to your image’s orientation. When the aspect ratios differ, the factor is the one that makes your image cover the print, which means part of it will be cropped, as a print lab would. Verdicts: up to 1× prints as it is; up to 2× is easy for any modern upscaler; 2–4× is fine with a good model; 4–6× suits AI art and distant viewing; above that, consider a smaller print.
Why the ppi options? Read upscaling for print for the viewing-distance maths.
FAQ
How big can I print my photo?
Divide the pixel width and height by the ppi you want. A 4000 × 3000 px photo prints at 13.3 × 10 inches at 300 ppi, or 26.7 × 20 inches at 150 ppi. The calculator shows this for 300, 200, 150 and 100 ppi.
What upscale factor is too much?
As a rule of thumb, 2–4× looks natural with good models. 4–6× works for AI art and for prints viewed from a distance. Beyond that, results look generated rather than photographic. The calculator flags large factors.
Does the calculator upload my image?
No. If you drop an image, your browser only reads its width and height locally. The pixels never leave your device.