Mouse DPI Test & DPI Checker Online
Estimate your mouse DPI by moving a known physical distance. Use a ruler to measure, then move your mouse—we calculate approximate DPI.
Use our free mouse DPI checker to measure your effective mouse sensitivity. This DPI test works in any browser—calibrate with a ruler, drag the hand to the target, and get your DPI instantly.
Mouse DPI Test
Estimate your mouse DPI by moving a known physical distance. Uses Pointer Lock for accurate tracking.
Drag the green caret from the start to the red target line to measure your DPI.
Pixels
0
Target
5"
DPI
0
Calibration
Adjust until the bar equals 2" on your physical ruler. This improves accuracy for different displays.
This bar should measure 2" on your physical ruler
DPI Results
Release the caret to calculate. Multiple tests improve accuracy.
No results yet. Drag the caret to see your DPI measurements.
Tips for Accurate Testing
- Ensure browser is at 100% zoom level
- Test multiple times and use the average
- Drag the caret in a straight line
- Use longer distances (5+ inches) for better accuracy
- Disable mouse acceleration in your OS settings
- Calibrate your display first using a physical ruler
About this test
This tool estimates effective sensitivity (DPI/CPI) based on pointer movement over a known physical distance. True hardware DPI requires calibration equipment. Results vary with OS sensitivity, acceleration, and display scaling.
How to run a mouse DPI test
- Select a reference distance (e.g. 10 cm) and measure it with a ruler.
- Click the test area to start. Your cursor will lock—move your mouse the selected distance along your desk.
- Press ESC when done. The estimated DPI will be displayed.
This is an approximation. True hardware DPI requires calibration. Results are affected by OS sensitivity and display scaling.
Mouse DPI Test FAQ
What is mouse DPI?
DPI (dots per inch) measures how many pixels the cursor moves per inch of physical mouse movement. Higher DPI means more sensitivity.
Can I test mouse DPI online?
Yes. Our tool estimates DPI by tracking pointer movement over a known distance. You need a ruler to measure. Results are approximate.
Why is my estimated DPI different from my mouse settings?
OS sensitivity, acceleration, and display scaling affect the result. This test measures effective sensitivity, not raw hardware DPI.