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Free Online DPI and PPI Calculator

Calculate diagonal pixels per inch from physical diagonal size. Display scaling is not included.

Your input stays on this device. Processing is bounded; regex runs in a worker with a two-second timeout.

Result



How to use DPI and PPI Calculator
Calculate diagonal pixels per inch from physical diagonal size. Display scaling is not included.
  1. Set Width.
  2. Set Height.
  3. Set Inches.
  4. Run the tool, review the result and its stated limitations, then copy or download if needed.
Example & practical use
Calculate diagonal pixels per inch from physical diagonal size. Display scaling is not included. The example below demonstrates Width; Height; Inches.
Example input:
{
  "width": 300,
  "height": 400,
  "inches": 5
}
Expected result (relevant fields):
{
  "result": 100
}
Features & result limitations
Calculate diagonal pixels per inch from physical diagonal size. Display scaling is not included.
Frequently asked questions
What inputs does DPI and PPI Calculator accept?
Width; Height; Inches
How should I interpret the DPI and PPI Calculator result?
Calculate diagonal pixels per inch from physical diagonal size. Display scaling is not included.
Where does DPI and PPI Calculator process my data?
Inputs are processed locally in your browser. Submitted text is not sent to external services. A successful-run event increments an aggregate tool counter without your input.