Print Resolution
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Inputs

Pixel density (PPI)
300

Results

Pixel density (PPI)
300

Media and photography results

Pixel density (PPI)300

formula-map diagram

Pixel density (PPI)
300

Media and photography relationship

Formula

PPI = pixels ÷ inches

= 300

Note

This result uses the values you entered and a simplified planning equation; verify quantities and local requirements before purchasing or building.

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Frequently asked questions

How is the print resolution (DPI) of an image calculated?+

DPI equals the image's pixel dimension divided by the physical print size in inches, so a 3000-pixel-wide image printed at 10 inches wide gives 300 DPI. The same calculation applies independently to width and height, though they're usually kept proportional.

Why is 300 DPI considered the standard for quality prints?+

At normal viewing distance (roughly arm's length), the human eye generally can't distinguish individual dots above about 300 per inch, so this has become the conventional target for photo-quality prints, magazines, and most commercial printing. Lower DPI becomes visibly 'soft' or pixelated, especially on fine detail.

Can a lower DPI still look fine, depending on the situation?+

Yes, large-format prints like posters or billboards are viewed from much farther away, so they can use significantly lower DPI (often 100-150 or even less) without looking soft, because viewing distance naturally reduces the eye's ability to resolve fine detail. DPI requirements scale down as intended viewing distance goes up.

Why does enlarging a low-resolution image to a big print size cause quality loss?+

The pixel count in an image is fixed once it's captured or exported, so stretching the same number of pixels across a larger physical print size necessarily lowers the DPI, which is why a small web-resolution image looks blocky or blurry if printed at poster size. More pixels are needed upfront to maintain sharpness at larger sizes.

Is DPI the same thing as the megapixel count of a camera?+

No, megapixels describe total pixel count regardless of print size, while DPI describes pixel density relative to a specific physical output size, so the same 24-megapixel image could be a crisp 300 DPI at 8x10 inches or a soft 100 DPI at 24x36 inches. DPI only becomes meaningful once you specify an actual print dimension.