Calculate DPI from pixel and physical size, pixel dimensions from print size and DPI, or print size from pixels and DPI. Supports inches, centimeters, and millimeters.

How to use this tool

1. Enter image width and height in pixels. 2. Enter the print width and height in inches (or cm). 3. Click Calculate. 4. Review DPI/PPI and whether the resolution is suitable for print. 5. Adjust dimensions to hit a target DPI if needed. Processing runs on your device.

Worked example

Example: a 3000×2000 px photo printed at 10×6.67 in gives 300 DPI—common for quality photo prints.

How it works

DPI and PPI are treated the same here: pixels per inch. Choose a mode to find resolution from pixel and print size, pixel dimensions from print size and DPI, or print size from pixels and DPI. Units can be inches, centimeters, or millimeters.

Limitations

Results are based on the inputs you provide and may not cover every edge case. This tool is for general use and is not professional advice.

Privacy and file handling

Your data stays on your device and is not uploaded.

FAQ

Frequently asked questions

Are DPI and PPI the same here?

Yes. This calculator treats DPI and PPI as pixels per inch for print and screen planning.

Is DPI / PPI Calculator free?

Yes. It is free to use and you do not need to sign in or create an account.

Is my data private?

See the privacy note on this page. Many tools run on your device; some heavier file tools may use secure temporary processing when required.

Can I use DPI / PPI Calculator on mobile?

Yes. Open this page on your phone or tablet, enter your inputs, and use the on-screen controls.

Page last reviewed: March 1, 2026

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