Mouse Button Tester
Inspect browser-visible left, middle and right mouse events and wheel direction within a dedicated area.
Play Mouse Button Tester
Click or scroll inside the test box while watching event counters.
How to play Mouse Button Tester
Click or scroll inside the test box while watching event counters.
How results are calculated
Counts of each received mouse input type.
Accuracy, limitations and fair comparisons
Touch-to-mouse emulation and device drivers can alter events. The challenge runs in your current browser session; compare repeated attempts on the same device for a more useful personal reference.
Questions and answers
Is Mouse Button Tester free?
Yes. This activity is free and does not require registration.
Does this test upload my input or score?
No. Gameplay and optional history storage run in your browser on this device; exporting a result requires your own action.
What is the measured result?
Counts of each received mouse input type.
Can the result be treated as a medical or hardware diagnosis?
No. Touch-to-mouse emulation and device drivers can alter events.
Related free challenges
See which key events your browser detects while testing an attached keyboard, including modifiers and repeat signals.
Play free →Reaction Time TestMeasure how quickly you respond after a visual signal changes. Practice five randomized trials and compare your median, no
Play free →Choice Reaction TestRespond to one of four colored signals by choosing the matching labeled button, combining reaction speed and decision accu
Play free →