DPI
Calculate megapixels from print size and DPI
How to use DPI
- 1Choose the direction: size → DPI, or DPI → print size.
- 2Enter pixel dimensions and physical size (or DPI and target pixels).
- 3Read the DPI / PPI and get print sharpness advice.
What are DPI and PPI?
DPI = pixels ÷ physical size (inches)DPI (dots per inch) is used for printing, PPI (pixels per inch) for screens; the terms are often mixed. They express how many dots/pixels fit in one inch — higher means finer detail.
Photos are usually printed at 300 DPI or more so they look sharp up close; web images at 72–96 PPI are fine. Enlarging low-pixel images prints blurry.
Frequently asked questions
Are DPI and PPI the same?
Close but not identical: DPI is printer dot density, PPI screen pixel density; everyday use treats them as synonyms.
How much DPI for a photo print?
Typically 300 DPI and up, 600 for high quality; below 150 DPI looks grainy up close.
Can small pixels print large?
Barely, and the larger you go the blurrier. Check the DPI at your target size first.