This test counts the movement signal your operating system passes to the browser. Two system settings sit between the sensor and that signal, and if either one is wrong, the number you get back will not be your DPI. Checking them takes under a minute.
Turn off pointer acceleration. Press the Windows key, type mouse settings, open it. Scroll down to Additional mouse settings and click it — a smaller window opens. Switch to the Pointer Options tab and clear the Enhance pointer precision checkbox.
That checkbox is pointer acceleration. With it on, the count depends on how fast you move, so the same physical distance gives a different answer every run.
Put pointer speed back to default. Same Pointer Options tab, the slider at the top. It has eleven notches — set it to the sixth, exactly in the middle. Every notch off centre multiplies or divides the movement your browser sees.
Reset browser zoom. Press Ctrl + 0 on this page. Zoom scales the reported movement along with everything else.
On Sonoma and later: open System Settings → Mouse → Advanced and turn Pointer acceleration off. Then press Cmd + 0 to reset browser zoom.
On older versions there is no switch for it. Open Terminal and run:
defaults write .GlobalPreferences com.apple.mouse.scaling -1
Log out and back in for it to take effect. Two things worth knowing before you do: your cursor will feel noticeably slower afterwards, and moving the Tracking Speed slider in System Settings silently undoes it. To go back, run the same command with a value between 0 and 3.
If you would rather not touch Terminal, LinearMouse and Mac Mouse Fix both do the same thing with a toggle.
Move at a steady, unhurried pace during the test. Even with acceleration off, a fast jerk makes it harder to stop on the mark, and the whole measurement depends on stopping where you meant to.
This test requires a desktop or laptop computer with a mouse. The rest of the page is still available.
Drag the caret from the start to measure your DPI.
Adjust until the bar equals 10 CM on your physical ruler.
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Tips for Accurate Testing
Mouse DPI measures how much movement the sensor registers for each inch the mouse travels. At the same CS2 sensitivity, a higher DPI produces more camera movement over the same physical distance.
400 and 800 DPI are the two main values among professional CS2 players. The data changes over time, so either value can take first place depending on the sample.
Use the DPI button on the mouse or its manufacturer’s configuration software. Changing Windows pointer speed doesn’t change the mouse’s hardware DPI.
Mouse DPI describes how many movement counts the mouse sensor registers over one inch of physical movement. Higher DPI sends more movement data over the same distance, so the view moves farther in CS2 if the in-game sensitivity stays unchanged. DPI is only one part of the final sensitivity, as the same overall movement speed can be achieved with different DPI and sensitivity combinations. In Counter-Strike, two DPI values have remained the most common choices for years:
Neither value is automatically better for aiming. In CS2, the final sensitivity depends on how DPI works together with in-game sensitivity.
Set the distance that will be used for the DPI test, select centimetres or inches, and calibrate the on-screen scale with a physical ruler before measuring. Place the mouse at the starting position, then drag the caret in a straight line for the selected physical distance. The checker compares the recorded cursor movement with that distance and calculates the mouse DPI. Running the test several times provides an average value and helps reduce errors caused by uneven mouse movement.
Setting | What It Does |
|---|---|
Target | Sets the physical distance the mouse will travel during the test. |
Target Format | Selects centimetres or inches for the target distance. |
Quick Select | Provides preset target distances of 5, 10, 15, 20, and 25 cm. |
Calibration | Adjusts the on-screen scale so the displayed 5 cm matches 5 cm on a physical ruler. |
PX/IN | Sets the pixel density used for screen calibration. |
Pixels | Shows the cursor movement recorded during the test in pixels. |
DPI | Shows the DPI calculated from the measured movement. |
Average DPI | Shows the average result from multiple completed tests. |
Latest DPI | Shows the result of the most recent test. |
DPI Results History | Keeps previous measurements available for comparison. |
