Output
Estimated dots per inch
UserBenchmark / All Tools / Mouse DPI Test
Mouse
Mouse DPI Test
Estimate mouse DPI by moving a measured physical distance.
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Mouse DPI Test · At a glance
Quick answer: Estimate mouse DPI by moving a measured physical distance. Estimated DPI divides reported cursor distance by travel in inches.
Mouse DPI Test
The test loads when you open it. Device access is requested only after you choose to start.
Detailed guide
How to use this tool
- Measure a straight physical travel with a ruler, enter the distance, then hold and drag across the surface once.
Input
Measured travel and cursor distance
Browser requirement
Pointer events; ruler supplied by the user
Processing
Runs on your device; no tool-result upload
How it works and what the result means
Estimated DPI equals reported cursor pixels divided by physical travel in inches. It is affected by pointer acceleration, display scaling and browser zoom.
Reading the result
Estimated DPI divides reported cursor distance by travel in inches. Five centimeters is about 1.969 inches; 1575 cursor pixels over that distance is roughly 800 DPI.
Use a measured straight movement
Place a ruler beside the mouse and enter the intended travel in centimeters. Hold the pointer down and make one straight stroke. Five centimeters is about 1.969 inches, so 1575 reported cursor pixels estimates roughly 800 DPI. Curves increase path distance. Acceleration, OS scaling and browser zoom can make cursor pixels differ from raw sensor counts.
What to check next
Keep zoom, display scaling and pointer acceleration constant. Curved strokes add path distance and can inflate the estimate.
Use a ruler, native scaling and a straight movement. A browser receives transformed pointer coordinates, so treat this as an estimate rather than a raw sensor calibration.
Frequently asked questions
Why does the estimate differ from the mouse setting?
The browser receives transformed cursor coordinates rather than raw sensor counts. Operating-system acceleration and scaling can alter the result.
How do I start the Mouse DPI Test?
Enter the measured travel distance, choose centimeters or inches, and drag across the test surface while holding the pointer down.
Does this tool require a download or an account?
No. Open the interactive tool above in a modern browser. The instructions and explanations are available even with JavaScript disabled; running a test needs JavaScript.
Why can two attempts give different results?
Power settings, background tasks, browser scheduling, operating-system input processing and device settings affect measurements. Compare repeated attempts with identical settings rather than the single highest score.