Mouse Test — Free Online Mouse Button Tester & Click Test

Select the Button Test tab. Click each mouse button one at a time — Left, Right, Middle (press the wheel), and both Side buttons if your mouse has them. Each button turns green when registered. For Right Click to register, you may need to right-click directly on the button boxes — the browser may show its own context menu if you right-click outside the test area.

While on the Button Test tab, click your left mouse button rapidly 10–15 times in quick succession. If the double-click alert appears (red warning box), your mouse has a failing switch. A healthy switch registers each click as a single event — no click pair under 80ms. Also check your click count vs your physical presses — if you get 12 counts from 10 presses, double-clicking is confirmed.

Switch to the Scroll Wheel tab. Hover your cursor over the scroll zone. Scroll up slowly 10 ticks, then down 10 ticks. The Up and Down counters should match your actual scrolls. If Up increases when you scroll Down, your encoder is failing — the contacts are worn and giving false signals. If scrolling produces no response, clean around the wheel with compressed air.

Switch to the CPS Speed Test tab. Choose your duration (5s for a quick check, 30s for sustained performance). Click the test zone to start, then click as fast as you can until the timer expires. Your CPS score tells you your clicking speed — useful for verifying switch responsiveness (a gaming mouse should allow 5+ CPS without ghosting) and for personal improvement tracking.

Switch to Pointer Tracking. Move your mouse slowly across the zone in smooth circles and figure-eights. The trail should be continuous — no gaps, no jumps. Move fast and slow. Gaps in the trail at any speed indicate sensor lift-off issues or tracking problems. Jitter on a hard mouse pad vs a soft one helps identify whether the issue is the sensor or the surface.