Mouse Test

Click slowly in the test area, one press at a time, on the button you suspect. Every click adds a bar. A healthy switch sends one click per press, so while you click slowly every bar clears the 80 millisecond line. A bar under the line is likely a ghost click: the switch clicked twice by itself, usually because it is worn or dusty. Ten slow clicks is enough for a first result, and the count keeps going after that.

A click you did not make. A worn switch can bounce and send two clicks for one press, or click again the instant you let go, which is why a mouse starts double clicking by itself. While you click slowly, the test flags a second click less than 80 ms after the one before, or within 30 ms of letting go. Runs of four or more fast clicks, like jitter clicking, are not counted. A short burst of butterfly clicking can still be flagged, so click one press at a time while you test.

Polling rate is how many times a second the mouse reports its position, measured in hertz (Hz). Office mice usually run at 125 Hz, gaming mice at 500 or 1000 Hz, and newer ones at 2000, 4000 or 8000 Hz. The number shown is the highest rate your browser saw over at least half a second of unbroken movement. Browsers can drop a few reports, so treat it as a close estimate.

Move the mouse in fast circles anywhere on the page for two or three seconds and read the peak. It should land close to a standard rate such as 125, 500 or 1000 Hz. The reading depends on your browser and how busy your computer is. Use an up-to-date browser and close heavy tabs first.

A notch registered in the opposite direction while you were rolling one way. One can be a slip of the finger. Two or more usually mean the wheel's encoder is dirty or worn. Blowing the dust out sometimes fixes it.

Firefox never passes the side buttons to web pages: it keeps them for its own Back and Forward, so pressing one here can take you off the page. Test them in Chrome or Edge. There they show up if your mouse sends them as the standard Back and Forward buttons. Some gaming mice need their own software set that way.

Yes, most of it, and there is nothing to set up. A trackpad tests left click, right click with a two finger click, and the double click check works the same. Holding Control and clicking arrives as a left click in some browsers, so use two fingers. Most trackpads have no wheel button and no side buttons, so those are marked as not tested rather than failed. Scrolling arrives as many small steps rather than notches, so we count how far you scrolled and we do not measure wrong way. The rate a trackpad reports is its own, not a mouse polling rate. On a phone or a tablet there is nothing to test.

Yes, but only as numbers. There is no account and no sign in, and we never send anything that names you. Google Analytics counts visits and tells us which tools get used, and on the game and the click speed test it also gets a run's settings and result. That is how we decide what to fix next. Your button counts, wheel counts and polling rate stay on this page, and your last checkup is saved in this browser. We may send more gameplay numbers like these later.

Ten slow clicks on one button finish the check and give you a verdict. That is enough to catch a switch that misfires often. It is not proof that a mouse is perfect: a switch that double clicks on one press in fifty passes ten clicks about four times in five. The count keeps climbing after ten, so if your mouse sometimes double clicks while you work, click on to thirty or more. Test the left button first, because it takes the most clicks and wears out first.