Mouse Test

Test buttons, wheel and double-click problems

This mouse tester checks all five standard buttons: left, right, middle (pressing the wheel) and the two side buttons usually called back and forward. Each button counts its presses and turns green once it has worked. The scroll wheel is tested as well, with separate counters for scrolling up and down and for horizontal tilt on mice that support it. Inside the test box the context menu, middle-click autoscroll and back/forward navigation are blocked, so you can press everything freely.

The most common mouse fault is double-click chatter: an ageing switch bounces and turns one click into two, which can open files unexpectedly or break drag-and-drop. The tester times every press, and if the same button fires again sooner than the threshold — 80 ms by default, which is faster than people can click on purpose — it counts an unintended double click and highlights the button in red. Click normally for a minute; a healthy mouse should show zero.

Double-click speed and polling rate

The double-click box measures the time between your two presses and rates the speed. Operating systems usually treat clicks within about 500 ms as a double click, adjustable in the mouse settings. The polling rate is how often the mouse reports its position to the computer: 125 Hz for basic mice and 500–1000 Hz or more for gaming mice. Move the mouse quickly and continuously in the test box to get a stable reading.

Troubleshooting

If a button never registers, check vendor software that may remap it and try another USB port or fresh batteries for wireless mice. A low polling rate on a gaming mouse is often a setting in its utility, or a power-saving mode in wireless receivers. Everything runs in your browser; no data is collected.