DPI Calculator
Calculate image DPI from pixel dimensions and print size. For screenshots, PDFs, and marketing assets.
Calculate print DPI from image pixel dimensions and intended print size. For screen density, use the PPI Calculator.
DPI (width)
300
DPI (height)
299.9
Width and height DPI match. This image will print at consistent resolution.
Formula
DPI (width) = image width (px) / print width (in)
DPI (height) = image height (px) / print height (in)
When both values match, the print size preserves the image aspect ratio. A mismatch usually means the print dimensions stretch or crop the image.
What is DPI?
DPI (dots per inch) describes how many pixels map to each inch of printed output. It matters when you export app screenshots, marketing assets, or PDFs and need them to print at a specific physical size without blur.
How to use this calculator
Enter your image dimensions in pixels and the intended print width and height in inches. The tool calculates DPI along each axis. If width and height DPI differ, your print dimensions may not match the image aspect ratio.
Common print targets
150 dpi: draft proofs and internal review. 300 dpi: standard high-quality print. 72 dpi: screen-only previews (not recommended for print).
DPI vs PPI for mobile QA
When testing mobile apps, screen density is measured in PPI, not DPI. Use the PPI Calculator and Mobile Device Sizes reference for handset displays. Use this DPI tool when QA involves printable reports, screenshots in PDFs, or store marketing assets.
