Mouse Test
Every button, the wheel, and the double clicks a worn switch sends by itself.
Runs entirely in your browser
Loading the tool…
Click every button inside the box, and turn the wheel. Each one lights while it is down and stays marked once it has worked. Then click normally for a while: a single press that arrives as two is the switch starting to fail.
- 0Accidental doubles
- —Shortest gap
- 0Presses
Clicks per second
Click in the box as fast as you can. The clock starts with the first click.
Click every button inside the box and turn the wheel both ways. Each lights as it works, including middle, back and forward, which the page catches before the browser can act on them, so testing Back does not leave the page.
The fault most people come here for is a mouse that double clicks by itself. The switch under a button is a small metal spring, and as it wears it bounces: one press makes and breaks the contact twice, a few milliseconds apart, and the computer sees two clicks. Files open when you meant to select them, and drags drop halfway.
So the page times every press against the last press of the same button. A deliberate double click takes well over a tenth of a second, and a bounce takes a fraction of that. Any second press inside the line counts as accidental and is marked in red. Click normally for a minute: a healthy switch scores zero.
Below that is a clicks per second test, for the other reason people want to know how fast their mouse can click. The clock starts on the first click and stops by itself.
How to use it
- Click every button in the box, and scroll up and down.
- Click normally for a minute and watch the accidental doubles count.
- Try the clicks per second box below for a speed score.
Questions
My mouse double clicks on its own. What can I do?
The switch is bouncing, and it is a hardware fault, so settings will not cure it. Short term, some mouse software has a debounce setting that ignores a second click inside a few milliseconds. For good, the switch can be replaced by anyone handy with a soldering iron, or the mouse replaced. Compressed air helps now and then, rarely for long.
What does shortest gap mean?
The quickest any button has been pressed twice in a row, measured from press to press. A deliberate fast double click lands somewhere around 100 to 200 milliseconds. A gap of 20 or 30 is not a finger; it is the switch.
Can I be sure it is the mouse and not my finger?
Mostly. Nobody presses a button twice in 30 milliseconds on purpose. If the count climbs while you are clicking slowly and deliberately, it is the switch. To be certain, try the same mouse on another computer, and another mouse on this one.
Why does Back not take me back?
Because the page stops it while you are inside the box, so you can test the button without leaving. Outside the box the side buttons work as normal. Some mice send keyboard shortcuts rather than button presses for their extra buttons, and those will not show here.
What is a good clicks per second score?
Most people manage 6 to 8 clicks a second with one finger. Around 10 is fast. Scores well above that come from techniques like jitter or butterfly clicking, and on some mice from a switch bouncing, which is the fault the test above looks for.
Is my clicking recorded?
Only in this tab, to count it. Nothing is stored and nothing is sent: the page is served with a header that forbids it opening a connection to anywhere.
Your data stays on your device
Everything above runs inside your browser as WebAssembly compiled from Rust. Nothing you type is uploaded, logged or stored on a server. You can load this page once, go offline, and it still works.
This page makes no requests at all, to anywhere. That is not a promise in the copy: it is a Content-Security-Policy header your browser enforces, and connect-src on it is none. Open the network tab and watch nothing happen.