Mouse Tester
Check every button, catch the double clicks of a worn switch, and measure the scroll wheel and polling rate — all in one box.
At a glance
- Tests all five buttons — left, right, middle (wheel click), back and forward — and lights them up on a mouse drawing.
- Catches unwanted double clicks: a second press less than 80 ms after the first (you can change the limit) is the classic sign of a worn switch.
- Counts scroll wheel steps up, down and sideways, and shows whether the wheel moves in lines or pixels.
- Measures the polling rate — how often the mouse reports its position: 125 Hz for office mice, 1000 Hz or more for gaming mice.
- Shows clicks per second (CPS) and the fastest gap between presses.
- The back and forward buttons are caught inside the test box, so they don’t leave the page. Nothing is uploaded.
Step by step
How to test your mouse
- 1
Click each button
Click the left, right and middle buttons, and the side buttons, inside the box. Each one lights up and counts.
- 2
Check for double clicks
Click the left button normally twenty or thirty times. Any press flagged as a double click means the switch is bouncing.
- 3
Roll the wheel
Scroll slowly up and down. Every step should count in the right direction.
- 4
Measure the polling rate
Move the mouse quickly in circles inside the box and read the rate in Hz.
Features
Everything you need, nothing you don’t
Double-click checker
Find the fault behind accidental double clicks, dropped drags and files that open by themselves.
Every button
Left, right, middle, back and forward, with counts and the fastest gap for each.
Polling rate
Move in circles to see the report rate in Hz and the nearest standard rate.
Scroll wheel
Counts each step both ways and sideways, to catch a wheel that skips or jumps back.
Clicks per second
Live CPS and your best burst.
Movement trail
See the pointer’s path to spot jumps, stutters and a dirty sensor.
Why does my mouse double click by itself?
Inside each mouse button is a small metal spring switch. As it wears or oxidises, a single press can make contact twice within a few milliseconds — the computer sees a double click. It shows up as files opening when you meant to select them, drags that let go, or two shots instead of one in games.
The test flags any press that comes sooner after the previous one than a person can click on purpose. A few flags in a hundred clicks confirm the fault. Fixes: clean or replace the switch, use the warranty, or as a stopgap raise the double-click speed setting.
Polling rates
| Rate | Report every | Typical mouse |
|---|---|---|
| 125 Hz | 8 ms | Office and older mice |
| 500 Hz | 2 ms | Mid-range gaming mice |
| 1000 Hz | 1 ms | Most gaming mice |
| 4000–8000 Hz | 0.25–0.125 ms | High-end esports mice (may need a special receiver) |
Mouse not working properly? Check these
- Cursor jumps or stutters: clean the sensor window underneath, and use a mouse mat — glass and glossy desks confuse optical sensors.
- Wireless lag: charge or replace the battery, and move the receiver closer (a USB extension cable helps).
- Side buttons do nothing: some mice need their own software to map them, or they are assigned to other actions.
- Scroll wheel jumps back: the wheel’s encoder is dirty or worn; compressed air sometimes helps.
FAQ
Frequently asked questions
How do I do a mouse double click test?
What is a good polling rate?
Will the back button leave this page?
Why does the polling rate read lower than my mouse’s setting?
Can I test a laptop touchpad?
Is anything recorded?
Keep going
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