Image DPI calculator
Pixels + print size → DPI/PPI (and the reverse). Math in the browser; optional EXIF from a local file.
No uploads. No account. Free to use.
Optional: drop an image to read pixels
Nothing is uploaded. Processing stays on this device.
Horizontal DPI: 300.0·Vertical DPI: 299.9
- Files never leave your device
- Runs entirely in your browser
- No signup required
- Free
What is image dpi calculator?
The DPI calculator relates pixel dimensions to print size (inches) to estimate dots per inch.
How to use it
- Enter pixel dimensions and print size, or the reverse.
- Optionally drop an image to read pixel size.
- DPI is calculated in the page.
When to use it
Print shops ask for 300 DPI. This is arithmetic plus optional pixel reads from a local image.
Frequently asked questions
Are my files uploaded?
No. This tool runs in your browser. Files and text stay on your device and are not sent to our servers.
Does this use AI?
No. It is a deterministic utility. There is no model and no third-party processing of your data.
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