Controller Deadzone Tester
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How to test controller stick drift
Connect your controller by USB or Bluetooth, keep this page active, and press a controller button. Start the test, select Calibrate untouched center, and release both sticks until the center readings appear. Then start the full-range test and slowly trace the outer edge with each stick before stopping it.
What the readings mean
Center drift is the largest distance from the original center during calibration; jitter describes variation around the sampled center. The live plot is center-adjusted after calibration. Range coverage describes directions sampled, not controller quality. Circularity compares the sampled edge with its average radius, so an incomplete trace is not a reliable comparison.
Choosing a comparison deadzone
The slider compares the recorded center drift with a threshold; it does not change your controller, Steam Input, or game settings. Repeat the untouched test, compare small changes in the actual game, and keep enough stick travel for fine control. There is no universal best deadzone or circularity pass mark.
Controller not detected or results differ?
Press a button while this page is visible, check the operating system recognizes the controller, and try a USB connection or another supported browser over HTTPS. Firmware, drivers, remapping, and browser mapping can affect exposed values. This tool does not repair hardware, measure input latency, or certify a controller. Reports and saved profiles are local comparison records.