Print Resolution Calculator

Divide each pixel dimension by the target DPI. A 6000 by 4000 pixel image at 300 DPI prints 20 by 13.33 inches, because 6000 / 300 is 20 and 4000 / 300 is 13.33.

300 DPI is the standard for sharp photo prints viewed up close, such as albums and small framed prints. Large prints viewed from a distance, like posters, look fine at 150 to 240 DPI.

PPI describes pixels in a digital image, while DPI describes the dots a printer lays down. For sizing a print they are used interchangeably, and this tool treats them the same.

Yes. Spreading the same pixels over fewer dots per inch makes a larger print, but past a point the individual pixels become visible up close. Bigger prints get away with it because people stand farther back.

The farther away a print is viewed, the less resolution the eye can resolve, so a billboard can print at well under 100 DPI. As a rule of thumb, halving the viewing distance doubles the DPI you want for the same apparent sharpness.

Multiply the print width and height in inches by the DPI, then multiply those pixel counts and divide by one million. An 8 by 10 inch print at 300 DPI needs about 7.2 megapixels.

Upscaling adds pixels by interpolation, not real detail, so the print gets larger but not sharper. This calculator reports the native print size at full quality. Modest enlargement can look acceptable, but heavy upscaling shows softness.

Yes. The math runs in your browser, so the pixel dimensions and DPI you enter are never uploaded.