Mouse DPI test
Find your mouse's real DPI: move it a known distance along a ruler and the test counts how far the sensor says it moved.
—
How to measure
- Put a ruler (or a sheet of A4 paper: 21 cm wide) on your desk and enter the distance above. 10 cm or more gives the best result.
- Click the box. In Chrome and Edge the pointer disappears — that's normal, the test now reads the mouse directly.
- Line the mouse up with the start of the ruler, hold the left button, slide it straight to the end mark and release.
- Repeat two or three times. Press Esc to leave.
Why the result can differ from the box
- Sensors are rarely exact: ±5–10% from the printed DPI is normal, and many mice offer several DPI steps on a button.
- In raw mode (Chrome, Edge) the result doesn't depend on Windows pointer speed or acceleration. In other browsers it does: set pointer speed to the middle and turn off “Enhance pointer precision” first.
- Moving at an angle or lifting the mouse makes the number smaller.
Frequently asked questions
What DPI is best for gaming?
Most players use 400–1600 DPI and set the final speed in the game. Higher DPI isn't more accurate by itself; it just moves further per centimeter.
Is DPI the same as polling rate?
No. DPI is how far the pointer moves per inch; polling rate is how often the mouse reports. The mouse test shows an estimate of the event rate.