Mouse Tester
Press every button and scroll the wheel to check it registers — then test for double-click faults.
Buttons
0/5 tested- Left0
- Middle0
- Right0
- Back (side)0
- Forward (side)0
Double-click health check
Click the pad below with single, deliberate clicks — about one per second. If your mouse registers an extra click on its own (a gap under 70ms), the switch may be worn and double-clicking.
A mouse tester checks that every button and the scroll wheel on your mouse register correctly, and helps diagnose the common "double-click" fault where a worn switch fires two clicks from one press. Everything runs in your browser — no download.
What the mouse tester checks
Left, right and middle (wheel) clicks, both side buttons, and scroll up and down. Each control highlights on the mouse diagram and counts your presses, so a button that doesn't light up is one that isn't registering — a quick way to spot a dead switch.
Diagnosing a double-clicking mouse
Switch "chatter" is when a single physical click sends two click signals. The double-click health check times the gap between your clicks and flags any that are impossibly close together. If you see repeated warnings while clicking normally, your switch is likely failing. When it's time for an upgrade, see our best gaming mouse guide.
Frequently asked questions
How do I test my mouse?
Press each button on the mouse diagram — left, right, middle (wheel click) and the side buttons — and scroll the wheel up and down. Each control lights up and counts your presses, so you can confirm every one works.
How does the double-click test work?
Click the double-click pad with single, deliberate clicks about once a second. The tool measures the gap between clicks. If your mouse fires two clicks with a gap under 70ms from one physical press, that's a sign of switch chatter — a failing button that double-clicks on its own.
My mouse is double-clicking — can I fix it?
Double-clicking usually means the mouse switch is worn out. Software debounce settings can mask it temporarily, but the real fix is replacing the switch or the mouse. This tester helps you confirm the fault before you buy a replacement.
Why don't my side buttons register?
Some browsers use the back/forward mouse buttons to navigate, and a few mice need their software running to send extra buttons. The tester blocks navigation where it can, but if a side button still doesn't show, check your mouse software and browser.