Scroll Wheel Test Online
Scroll your wheel to see events here
Play & test — check your mouse performance with games
How to run a scroll wheel test
- Scroll slowly upward and confirm each scroll event appears.
- Scroll quickly downward to check for jumps or skips.
- Repeat with different surfaces to detect sensor + wheel issues.
If scrolling skips lines, clean the wheel and update mouse drivers.
Scroll Wheel Test FAQ
How do I test my scroll wheel?
Use the tester and scroll up/down to verify smooth, consistent scrolling without jumps or skips.
Why is my scroll wheel jumping?
Jumping can be caused by dust, worn encoders, or driver issues. A scroll wheel test helps confirm the problem.
Why does my scroll wheel move in the wrong direction?
Reversed scroll direction can be a system setting or a sign of encoder issues. Check OS settings first.
How fast should I scroll during testing?
Test both slow and fast scrolling to reveal skips that only show up at higher speed.
Is this a scroll test and mouse wheel test in one?
Yes. This scroll test / mouse wheel test tracks each notch of wheel movement so you can run a scroll speed test, check horizontal scroll, and spot jumps, skips, or reversed direction that point to a worn encoder.
Related Mouse Tests
Explore more tests to diagnose your mouse.