What this tool does
DPI/PPI Calculator converts pixel dimensions, print size, and resolution density.
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🖼️ DPI / PPI Calculator
Calculate print dimensions, megapixels, and required pixels for target physical sizes. DPI metadata is not magic; the math stays honest.
DPI/PPI checks
Validates positive pixel dimensions and density, separates physical print math from misleading DPI metadata claims, and returns both inch and centimeter outputs.
Why it is useful
It helps prepare images for print, screens, scanning, product listings, and design handoff.
How it works
The browser divides pixel dimensions by PPI/DPI to estimate physical print size and multiplies target inches by density for required pixels.
Best input
Use final pixel dimensions after cropping or resizing, then choose the density your printer or platform requires.
Print tip
Ask the print provider for required DPI, bleed, color profile, and viewing-distance rules before exporting final files.
Privacy note
Resolution math runs locally in your browser.
Important limitation
DPI metadata alone does not add detail; actual pixel dimensions and print process determine quality.
Quick answers
Is 300 DPI always needed?
It is common for print, but needs depend on viewing distance and printer requirements.
Can DPI improve a blurry image?
No. Changing metadata cannot create real detail.
Common Use Cases
Check print readiness
See how large an image can print at 300 DPI before sending it to a printer.
Plan export dimensions
Calculate required pixels for an 8×10 print, poster, product image, or scan.
Copy exact image specs
Share megapixels, print size, and warning notes in a ticket or design handoff.
Image Toolkit workflow
Move between compressing, resizing, converting, cropping, encoding, favicon generation, resolution math, and palette extraction while keeping image pixels local to the browser.