How the double-click test works
Your operating system decides whether two clicks count as a double-click. It checks two things: the clicks came close enough together in time, and the pointer barely moved between them.
This test reads the click count the system reports for every press, so a double-click here is exactly what Windows, macOS or Linux would treat as a double-click. For each one it measures the interval between the two presses.
It also measures the time between releasing the button and pressing it again. A human finger needs at least 60–80 ms to lift and press again. If that gap is under 40 ms, the second click almost certainly came from the switch bouncing, not from you. That is a phantom double-click.
Two tests in one
1 · Double-click speed
Double-click the folder 10–20 times. The chart shows your intervals; most people land between 100 and 250 ms. If normal double-clicks keep showing up as “single click”, your system double-click speed is set too fast.
2 · Phantom double-clicks
Now single-click the folder slowly, 30–50 times. On a healthy mouse the double-click counter stays at zero. Every red bar is a single press your mouse sent as two.
What is the “system limit”?
Your operating system has a double-click speed setting – on Windows the default window is 500 ms. The test estimates it from your clicks: the slowest pair that still counted as a double-click, and the fastest pair that did not. Click pairs at different speeds to narrow the range down.
| System | Where to change double-click speed |
|---|---|
| Windows 11 / 10 | Settings → Bluetooth & devices → Mouse → Additional mouse settings → Buttons → Double-click speed |
| macOS | System Settings → Accessibility → Pointer Control → Double-click speed |
| Ubuntu (GNOME) | Settings → Accessibility → Pointing & Clicking → Double-Click Delay |
| ChromeOS | Not adjustable – fixed at about 500 ms |
How to fix a mouse that double-clicks by itself
- Rule out software. Check that Windows “single-click to open an item” is off (File Explorer → Options) and that your mouse software has no macros on the left button.
- Update firmware and raise debounce time. Logitech, Razer, SteelSeries and others let you set a debounce delay. Raising it to 8–12 ms often hides light chatter.
- Clean the switch. A few quick blasts of compressed air under the button, then click it firmly 50–100 times, can clear oxidation for a while.
- Swap the button in your system settings (left-handed mode) as a temporary workaround if only one side is affected.
- Replace the switch or use the warranty. Phantom double-clicks are a known wear fault, and many manufacturers replace mice that develop it inside the warranty period.
To test every other button and the scroll wheel at the same time, use the full mouse click test.
Frequently asked questions
What is a normal double-click speed?
Most people double-click with 100–250 ms between the two presses. Older users and people new to computers are often slower, which is why the default system limit is a generous 500 ms.
Why does my mouse double-click when I click once?
The metal contact inside the switch has worn or oxidised and bounces when pressed. The computer sees two presses a few milliseconds apart. This test reports those as phantom double-clicks.
Why isn't my double-click recognised?
Either you clicked slower than the system limit, or the pointer moved too far between clicks. Try slowing the double-click speed setting in your operating system, and keep the mouse still while you double-click.
Is it the mouse or my computer?
Plug the mouse into another computer and run this test again. If phantom doubles follow the mouse, the switch is at fault. If they stay on the computer, check software and drivers.
Can I test a touchpad?
Yes. Double-tap or double-press the touchpad. Touchpads rarely produce phantom doubles, but the interval measurement works the same.