Find out if your mouse is double-clicking on its own.
Test whether your mouse fires a single click per press or sneaks in an unwanted second one. Click the pad with deliberate, single clicks; the tool measures the gap between consecutive clicks and flags any that land under your double-fire threshold, the tell-tale sign of a worn or failing click switch.
Every click is logged with its interval, the fastest gap is tracked, and a verdict tells you at a glance whether the button looks healthy or suspect.
Anything below the threshold (80ms by default). Real worn switches usually re-fire within a handful of milliseconds, while deliberate human double-clicks are 100ms or more apart.
The tool can't tell intent from timing alone, so click once each time. Any second click that appears on its own is the hardware misfiring.
Every calculation happens on this page, in your own browser. Your input is never sent to a server and never logged, which also means the tool keeps working when you are offline.