Pixels to Print Size Calculator
Find the physical print size of an image at a given DPI.
What you provide
Result
10 × 6.67 inches at 300 DPI
At 300 DPI, 3000×2000 pixels prints at 10×6.67 inches. Print quality needs about 300 DPI; below 150 the print looks soft. Lower DPI means a bigger but coarser print.
- Inches
- 10 × 6.67
- Centimetres
- 25.4 × 16.93
What this cannot tell you
- Arithmetic on pixels and DPI. It tells you the size at a chosen DPI, not whether the image has enough detail to look good at that size.
Take this with you
How this calculation works
Dividing pixel width by DPI gives the print width in inches. Higher DPI means a smaller but sharper print; lower DPI means larger but coarser.
What the results mean
- 300 DPI
- The standard for quality photo prints. Below 150 DPI, prints start to look soft when viewed close up.
Common problems and fixes
- The calculated size is much smaller than the print I want
- You do not have the pixels for it at that DPI, and enlarging cannot add detail that is not in the file. Either accept a lower DPI — entirely reasonable for anything viewed from a distance — or go back to the source and export at a higher resolution. Upscaling software interpolates; it does not recover.
- The printed result looks softer than the numbers suggested
- DPI is a necessary condition, not a sufficient one. An image that was heavily JPEG-compressed, upscaled earlier in its life, or shot slightly out of focus has fewer real details than its pixel count implies. The calculation assumes every pixel carries information, which for a resampled image is not true.
- My printer reports a different DPI to the one I entered
- Two different numbers share the abbreviation. Printer DPI describes how many ink dots it places per inch — often 1200 or more — while image DPI describes how many image pixels are mapped to each inch of paper. A 300 DPI image on a 1200 DPI printer is normal and correct.
Frequently asked questions
What DPI do I need for a good print?
Around 300 DPI for prints held close, like photos and cards. For posters viewed from a distance, 150 DPI or even less is fine. This tool shows the size at whatever DPI you choose, so you can trade size against sharpness.
Is 300 DPI always necessary?
No, and insisting on it wastes effort. 300 DPI is the standard for prints examined at reading distance — photographs, cards, book pages. A poster viewed from two metres looks fine at 150, and a billboard is often under 20. The right figure comes from the viewing distance, not from a rule.
Does DPI affect the file itself?
Not the pixels. DPI is metadata that says how large those pixels should be printed, so changing it alters the physical size and nothing about the image data. That is why changing DPI without resampling is instant and lossless, while changing pixel dimensions is a genuine transformation of the file.
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