Test your mouse: buttons, double click and polling rate
Click, scroll and move your mouse in the test area: each button lights up and counts its clicks, ghost double clicks and scroll wheel jumps are flagged, and the polling rate is shown in Hz. Nothing is sent.
- Ghost double clicks
- 5 buttons tested
- Scroll wheel jumps
- Polling rate in Hz
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How do you test your mouse?
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Click every button
Left, right, middle click and the Back and Forward side buttons: each button lights up in the test area and its counter goes up.
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Hunt down the double click
Click slowly, one click at a time, with the faulty button: if two clicks arrive less than 80 ms apart, an alert flags a ghost double click.
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Scroll wheel and polling rate
Scroll in one direction only to spot jumps, then move the mouse quickly in big circles to measure its rate in Hz.
A complete checkup for your mouse
Every button
Left, right, middle click and side buttons: each one lights up when pressed and shows its own click count.
Ghost double click detector
An alert appears when two clicks from the same button are less than 80 ms apart. The threshold is adjustable to match how you click.
Scroll wheel check
An up and down counter, plus jump detection: when the wheel sends a scroll in the wrong direction, you'll see it.
Polling rate measured
Average and maximum in Hz while you move the mouse: check that your gaming mouse is really running at 500 or 1000 Hz.
Why is my mouse double clicking by itself?
A folder that opens when you only meant to select it, a drag and drop that drops the file halfway, a gun that fires in bursts in a game: these are the classic symptoms of a worn microswitch under the button. Over time, its metal contacts wear down or oxidize, and a single press sends two signals very close together. To find out for sure, click slowly, one click at a time, for about thirty seconds: you can't produce two clicks a few milliseconds apart yourself, so every alert from the detector gives the switch away. If the problem also shows up on another computer, it's not Windows or a driver: it really is the mouse.
How to fix a mouse that double clicks, from quick fixes to warranty
Start by blowing compressed air under the faulty button, with the mouse unplugged: a speck of dust is sometimes enough to cause bouncing. Some gaming mouse software offers a debounce setting (“debounce time”): raising it a little makes the mouse ignore clicks that come too close together. But if the switch is worn, the problem comes back and gets worse. The good news: this often happens while the mouse is still under warranty. Check the manufacturer's warranty; depending on where you live, consumer law may also cover you (in the EU, the seller's legal guarantee lasts at least two years). Keep a screenshot of the test to back up your claim. Out of warranty, a handy person can replace the switch with a soldering iron; otherwise, it's time for a new mouse.
Polling rate: 125, 500 or 1000 Hz, what's the difference?
The polling rate, or report rate, is how many times per second the mouse sends its movements to the computer. At 125 Hz, an update arrives every 8 ms; at 500 Hz, every 2 ms; at 1000 Hz, every 1 ms. Office mice often run at 125 Hz, gaming mice at 1000 Hz, sometimes more. To measure it, move the mouse quickly in big circles: the mouse sends nothing when it's still, and the result may be slightly below the real value depending on the browser and how busy the computer is. Go by the maximum. If you read 125 Hz on a gaming mouse, change the rate in the manufacturer's software, or with the button found under some models.
Frequently Asked Questions
How can I tell if my mouse is double clicking on its own?
Click slowly, one click at a time, with the faulty button in the test area. If two clicks are registered less than 80 ms apart, the tool shows an alert: that's the sign of a worn switch.
Can a mouse that double clicks be fixed?
A blast of compressed air or a debounce setting in the manufacturer's software can help for a while. The real fix is replacing the switch, which requires soldering; if the mouse is still under warranty, use that instead.
Why does my scroll wheel jump when I scroll?
The page jumps up a notch while you're scrolling down: the wheel mechanism is dirty or worn. The tool's up and down counter makes these jumps obvious; compressed air sometimes does the trick, otherwise the wheel needs repairing or the mouse replacing.
How do I check my mouse's polling rate?
Move the mouse quickly in big circles in the test area: the tool shows the average and maximum rate in Hz. A maximum close to 125, 500 or 1000 Hz tells you your mouse's setting.
Why does a single click open my folders in Windows?
If the test doesn't detect any double clicks, check File Explorer's folder options: when “Single-click to open an item (point to select)” is selected, one click is enough to open a folder. In that case, your mouse isn't faulty.