Turn pixels and DPI into print size
An image's pixel dimensions don't tell you how big it prints — that depends on DPI, the dots packed into each inch. Print too few pixels per inch and the result looks soft. This calculator converts between pixels, DPI, and physical print size in both directions, so you know whether an image is big enough to print at the size you want.
How to use it
- Enter the image's pixel dimensions.
- Enter a target DPI or a target print size.
- Read the resulting print size or the pixels you'd need.
Rules of thumb
- Around 300 DPI is standard for sharp photo prints.
- Large posters viewed from a distance tolerate lower DPI.
- More pixels mean you can print larger before quality drops.
Questions people ask
Does changing DPI alter the file? On its own it only changes the intended print size, not the pixels. To truly add detail you'd need a higher-resolution source.
Is my data stored? No — the calculation runs in your browser.