ImgShrink
ImgShrink

Image DPI Calculator

Enter image width, height and DPI to see how large the image can print in inches and centimeters.

Pixel to print sizeDPI presetsInches and centimetersOptional local image reading

DPI calculator

Selected images stay in your browser. The calculator only reads pixel dimensions.

Result

Source dimensions
1200 x 1800 px
Inches
4 x 6 in
Centimeters
10.16 x 15.24 cm
Millimeters
101.6 x 152.4 mm

Print quality: High-quality print

How it works

  1. 1Enter pixel width and height or choose an image to read them locally.
  2. 2Select a DPI preset such as 150, 300 or 600.
  3. 3Read the print size and quality guidance.

Privacy and limits

  • Optional image reading happens in your browser and is not uploaded.
  • DPI metadata in files is not required; the selected DPI drives the calculation.
  • The result is a size calculation, not a printer color or paper guarantee.

DPI calculation notes

DPI connects pixel dimensions to physical print size. A 2400 x 3000 pixel image at 300 DPI prints at 8 x 10 inches.

This calculator does not need embedded DPI metadata because the selected DPI is the value used for the result.

Common use cases

  • Checking whether a photo is large enough for printing
  • Planning document image sizes
  • Reading pixel dimensions before resizing

Print notes

  • 300 DPI is a common target for high-quality photo printing.
  • 150 DPI can be acceptable for casual prints or larger viewing distances.
  • 72 or 96 DPI is mainly useful for screen-oriented estimates.

Original test sample

  • Enter 2400 x 3000 at 300 DPI and confirm the result is 8 x 10 inches.
  • Upload a local image and verify that only the pixel dimensions are read.

Frequently asked questions

Are my images uploaded?

No. ImgShrink processes selected images in your browser and does not upload them to a server.

Which DPI should I use?

300 DPI is a common high-quality print target, 150 DPI can work for general print, and 72 or 96 DPI is mainly screen-oriented.

Is this a final print or document approval check?

No. The calculator gives pixel, DPI and physical-size math. Printers, passport offices and upload portals may apply extra rules.

Source and compatibility notes

DPI and print-size results use standard pixel-to-physical-size formulas. Document-photo presets are reference sizes, not a substitute for official submission rules.

Last checked: 2026-09-07

Notes
  • Formula: inches = pixels / DPI; centimeters = inches x 2.54.
  • Passport and document photo rules vary by country and use case.
  • Verify official instructions before submitting ID or visa photos.

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