Image DPI calculator

Client

Convert between pixel dimensions and physical print size at a chosen DPI, or estimate pixels required for a target width and height in inches or centimeters.

About Image DPI calculator

Pixels ↔ print size (inches/cm) at a chosen DPI—plan exports without uploading images. The interactive transform on this page runs in your browser tab—Toolcore does not need your paste for the core operation described above.

How to use this page

Paste or type in the main workspace, run the primary action from the toolbar, then copy or download the result. Use Load example when the page offers it, or URL prefill (?q= / ?qb=) so agents and tickets open the same input.

Convert pixel dimensions and DPI to print size, or estimate pixels needed for a target physical size—pair with Image resize when you change resolution.

Print size at 300 DPI: 6.400 × 3.600 in (16.26 × 9.14 cm)

Nearby workflows on Toolcore

  • Image resize — Max width or height, keep aspect ratio, export WebP/JPEG/PNG—local only. after you export or copy from the media workspace.
  • Image ↔ Base64 — Encode PNG/JPEG/GIF/WebP to Base64 or preview pasted Base64—local encode/decode without upload. after you export or copy from the media workspace.
  • CSS unit converter — Convert px, rem, em, and pt with configurable root and parent font sizes—browser-only. after you export or copy from the media workspace.

Common use cases

  • Check whether a 300 DPI export fits a letter-size print.
  • Estimate pixel dimensions needed for a poster at 150 DPI.
  • Explain DPI vs screen pixels to teammates before sending assets to print.

Common mistakes to avoid

  • Confusing CSS pixels with print DPI

    Browsers often assume 96 CSS px per inch on screen—this tool is for print/export DPI planning.

  • Upscaling low-resolution art

    Raising DPI in metadata does not add detail—resize or rescan the source image.

FAQ

Do I need to upload an image?

No. Enter numeric width, height, and DPI—no file is read.

Which DPI should I use?

300 DPI is common for photo prints; 150 DPI may suffice for large posters viewed at a distance.

Common search terms

Phrases people search for that match this tool. See the full long-tail keyword index.

  • image dpi calculator online
  • pixels to inches at 300 dpi
  • print size from pixel dimensions
  • dpi to pixel size calculator

More tools

Related utilities you can open in another tab—mostly client-side.