DPI calculator
Calculate pixel density from pixel count and physical size.
No files selected
Use the pixel count and printed length for the same dimension. Pixels ÷ inches gives pixels per inch; this calculation does not add image detail. Change the input or settings to update your result. Results update as you type. Up to 1,000,000 characters.
Your result
How to use DPI calculator
- Enter the values you want to calculate and choose the relevant units or settings.
- The result updates as you type. Adjust the available settings if needed.
- Review the result, then use Copy result or a download link when available.
What to expect
Calculate pixel density from pixel count and physical size. Use the pixel count and printed length for the same dimension. Pixels ÷ inches gives pixels per inch; this calculation does not add image detail.