This middle click test checks the button under your scroll wheel, the one most mouse testers treat as an afterthought. Press the wheel down inside the test area and the drawing lights it up, the counter adds the press, and the readouts show how long you held it, whether one press arrived as two and whether the wheel turned while you pressed it. It works with wired, wireless and Bluetooth mice on Windows, Mac, ChromeOS and Linux, and with a touchpad set to send a middle click. The other buttons still register, so you can switch Middle button focus off and test the whole mouse.
How to run the middle click test
- Point at the test area. Autoscroll, which normally starts when you press the wheel on a page, is switched off there.
- Press the wheel straight down 10 times at a normal pace, without turning it.
- Check Middle presses. It should match the number of times you pressed.
- Hold the wheel down for a second, then let go, and watch Hold time. A long press should show a long time, not a short one followed by a second press.
- Turn the wheel up and down a few notches to check the scrolling too.
- Press Copy results if you need proof for a warranty claim or a support ticket.
What the results mean
| Readout | What it tells you | Normal result |
|---|---|---|
| Middle presses | Presses of the wheel button that reached the browser | The number of times you pressed |
| Hold time | How long the last press lasted | 50 to 150 ms for a normal click, longer when you hold it |
| Double presses | A second press within 40 ms of letting go | 0 |
| Wheel slips | Wheel steps while the button was held down | 0, or an occasional 1 on a light wheel |
| Last button | The button the browser saw last, and its number | Middle, button 1 |
If Last button says Left or Right when you press the wheel, the mouse software has remapped the middle button. Most mice number the wheel button 1 in the browser, and games often call it Mouse 3.
The middle button does nothing
When the wheel lights up for scrolling but never for pressing, the press is not getting through:
- The button is remapped. Logi Options+, G HUB, Razer Synapse, SteelSeries GG and other mouse apps let you give the wheel press another job, such as a gesture, a macro or a DPI change. Set it back to Middle click and test again.
- Dust under the wheel. The switch sits under the wheel axle. Blow compressed air into both sides of the wheel gap while pressing the wheel 20 times.
- A touchpad with no middle click set. Laptops need a gesture for it. See the questions below for Windows 11 settings.
- A worn switch. If the press feels soft or stops clicking audibly, the switch under the wheel is worn out.
The fix guide for a middle mouse button not working goes through drivers, app settings and the switch itself.
One press counts twice
A double press in orange means the switch bounced: it opened, closed and opened again within a few milliseconds of one press. In a browser that can open the same link in two new tabs, or open a tab and close it again. It is the same fault as a left button that double clicks, so the steps in the mouse double clicking fix guide apply here too. Compressed air helps if dust is the cause, and switch replacement is the lasting fix. The double click tester measures how often it happens.
The wheel scrolls when you press it
A count under Wheel slips means the wheel turned a notch while you pressed it. You aim to open a link in a new tab and the page jumps instead. Three things cause it:
- Pressing at an angle. Press straight down with the tip of your finger, not on the front or back of the wheel.
- A light wheel. Some mice have free spinning or low resistance wheels. Logitech mice with a free spin mode slip much less in ratchet mode, which the button behind the wheel switches on.
- A worn detent spring. If the notches feel weak, the wheel turns too easily. Cleaning will not fix that.
If the wheel also jumps backwards while scrolling, run the mouse scroll test, which plots each wheel step and counts the jumps.
Middle click on Linux pastes text
On most Linux desktops, the middle button pastes whatever text you last selected. That is a desktop feature, not a fault, and this test blocks it over the test area. On GNOME you can turn it off with the command gsettings set org.gnome.desktop.interface gtk-enable-primary-paste false.
What this test cannot see
A browser only sees a middle click once the mouse and the system send it. If your mouse software turns the wheel press into a keyboard shortcut or a gesture, the page receives that instead, or nothing at all. Pressure, travel and the click sound are not reported either. To check the rest of the mouse, run the full mouse button test, and use the trackpad test for a laptop touch surface.
Middle click questions
How do I test my middle mouse button?
Press the wheel straight down ten times without rolling it. Each press should light the button once and add one to the count. A press counted twice is flagged in orange, and scrolling while you press means the wheel turns under your finger. On a touchpad, first set a three finger tap to Middle mouse button under Settings, Bluetooth and devices, Touchpad, Three-finger gestures on Windows 11, and this page counts it too.
How do I middle click on a Mac?
A Mac trackpad and the Magic Mouse have no middle click built in. Any USB or Bluetooth mouse with a clickable wheel works on a Mac and shows up here. To open a link in a new tab without one, hold Command and click the link.
Why does my middle mouse button scroll instead of opening links?
Pressing the middle button on a blank part of a page starts autoscroll in Chrome and Edge on Windows, and in Firefox when autoscrolling is turned on. That is the browser, not a fault. Press it on a link and it opens the link in a new tab. This test turns autoscroll off over the test area so each press is counted.
Why does the middle click work in some apps and not others?
Apps decide what a middle click does. Browsers open links in new tabs and close tabs, many games call it Mouse 3, and some apps ignore it. If it fails everywhere, test it here: no light means the press never left the mouse, so the switch or the mouse software is the cause.
Can a middle mouse button be fixed?
Often, yes. Dust under the wheel and a remapped button in the mouse software are the usual causes, and both are free to fix. A worn switch can be replaced by a repair shop. The guide for a middle mouse button not working has the steps.