DPI Calculator
Calculate dpi from technical measurements.
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What this tool does
Calculate dpi from technical measurements. Image pixel density (often called PPI), not printer ink-dot density.
How to use the DPI Calculator
- Enter or select image width (pixels).
- Enter or select print width (inches).
- Read the calculated result; change any measurement to compare alternatives.
Formula
DPI=pixels/print width in inches
- pixels
- Image width (pixels)
- inches
- Print width (inches)
Image pixel density (often called PPI), not printer ink-dot density.
Worked example
For dpi calculator, the following measurements illustrate the exact method: Image width (pixels): 3000; Print width (inches): 10.
Inputs
- Image width (pixels)3000
- Print width (inches)10
Result
- Resolution (DPI)300
Results explained
- Resolution (DPI)
- Resolution (DPI) from the formula above. Image pixel density (often called PPI), not printer ink-dot density.
Frequently asked questions
DPI=pixels/print width in inches
Image pixel density (often called PPI), not printer ink-dot density.
Units appear in input and result labels. Keep lengths, pixel counts, bitrate and time units consistent.
Mathematical results follow the stated model; actual lenses, compression, viewing preferences and device specifications may differ.
No. It calculates from your entered values entirely in the browser.