inputprobe DPI Test

inputprobe DPI Test

Measure your mouse's real DPI/CPI in-browser using a physical reference.

Free - Free to use in your browser; no signup required and no data is uploaded (client-side processing).

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About inputprobe DPI Test

Browser-based utility that measures your mouse's real DPI (CPI) by comparing movement counts to a known physical reference (bank card, A4, US Letter). Runs entirely client-side (nothing is uploaded) and reports measured DPI, spread, and alignment error. Uses three-pass steadiness checks, an optional alignment test across different reference lengths to solve placement bias, and includes guidance for disabling pointer acceleration. No sign-up or installs — just open in your browser and drag along the reference.

Key Features

  • Measures real mouse DPI/CPI against a physical reference (bank card, A4, US Letter)
  • Displays spread and alignment error; performs three-pass steadiness checks
  • Optional alignment test using different reference lengths to remove placement bias
  • Runs entirely in the browser — client-side processing, nothing uploaded
  • Includes instructions for disabling pointer acceleration and interpreting results

Who is this for?

Gamers, esports players, PC hardware enthusiasts, and anyone who needs to verify or calibrate mouse DPI/sensitivity.

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