Test every mouse button, catch the double-click fault and a skipping scroll wheel, measure your clicks per second and the polling rate
How to use
Click inside the test box with the left, right and middle buttons and both side buttons. Each one lights up on the drawing and gets a counter.
Click normally for a while. If your mouse double clicks by itself, a warning appears with the button and how fast the false click was.
Scroll the wheel up and down inside the box to check it never jumps the wrong way.
Try the click speed test, and move the mouse in quick circles over the polling rate box.
Why use this tool
Catches the double-click fault: A worn switch turns one click into two. Any press that follows a release faster than a finger can move is flagged, per button.
All five buttons: Left, right, middle, back and forward are captured inside the box, so right click and the side buttons do not open menus or leave the page.
Scroll wheel check: Counts scrolls in each direction and flags a wheel that briefly registers the opposite way, the sign of a dirty or worn encoder.
Click speed test: Clicks per second over 1, 5, 10, 30 or 60 seconds, with your best result remembered on this device.
Polling rate: Measured from the mouse's own position reports and matched to 125, 250, 500, 1000 Hz or higher.
Frequently asked questions
How do I test if my mouse double clicks by itself?
Click normally inside the test box for a minute. If a single click ever registers as two, the tool flags a double-click fault on that button and shows how many milliseconds apart the two clicks were.
Can a mouse double-click problem be fixed?
Sometimes. Blowing out the switch with compressed air can help for a while, and some mice let you raise the debounce time in their software. For a lasting fix the switch has to be replaced, or the mouse replaced under warranty.
What is a good CPS score?
Most people click 5 to 7 times a second. Above 8 is fast, and scores above 12 usually come from techniques like jitter or butterfly clicking.
What polling rate should my mouse have?
125 Hz is standard for office mice. Gaming mice use 500 or 1000 Hz, and some go to 4000 or 8000 Hz. Higher rates make movement smoother and more responsive, especially on high refresh rate screens.
Why does the polling rate read lower than my mouse's setting?
The rate is only measured while the mouse is moving steadily. Move it quickly in circles. Some browsers and wireless modes also limit the reports a web page receives.