Mouse test
Press Start, choose a step and use the mouse in the area. Slow single clicks reveal buttons that register twice; rolling the wheel one way reveals events in the opposite direction.
Everything is measured inside this page. The measured values and results are not sent, saved or recorded.
Measure
Click and roll the wheel here. In this area the right button, the middle button and the back and forward buttons are used only for measuring.
- Clicks counted
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- Wheel events counted
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- Estimated polling rate
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This browser may combine mouse-move events, so the estimated polling rate can read lower than the real one.
Buttons that did not respond
Mark the buttons that did not respond when you pressed them. This is your own report. A mark cannot be undone; use Measure again if you marked the wrong one.
Result
Criteria used
These are the criteria this test applies. The values and the basis come from the same table the test judges with.
| Item | Criterion | Value | Basis |
|---|---|---|---|
| Button clicks twice | Minimum clicks for a judgement JikCheck initial criterion | 20 | Internal criterion: a rule for too few samples. With fewer clicks in the guided step than this, a rarely occurring problem could be missed, so the result is Cannot judge. |
| Button clicks twice | Short re-press interval JikCheck initial criterion | 80 ms | Internal criterion: a down-to-down interval shorter than the interval at which a person deliberately presses the same button again in the “press slowly, one at a time” step. It is far shorter than the operating-system double-click time (500 ms, known as the Windows default). |
| Button clicks twice | Double registrations that call for a check JikCheck initial criterion | 1 | Internal criterion: even one double press in the guided step is treated as Check needed, and measuring again is suggested. A single one can be chance, so it is not treated as Outside criteria. |
| Button clicks twice | Double registrations outside the criterion JikCheck initial criterion | 3 | Internal criterion: an initial assumption that if it repeats several times among the clicks of the guided step (at least the minimum number of clicks), a cause in the switch is more likely than chance. |
| Wheel scrolls the wrong way | Minimum wheel events for a judgement JikCheck initial criterion | 30 | Internal criterion: a rule for too few samples. With fewer wheel events in the guided step than this, a rarely occurring problem could be missed, so the result is Cannot judge. With few events, one opposite event moves the ratio so much that it cannot be told apart from the ratio at which a reversed wheel is treated as Check needed. |
| Wheel scrolls the wrong way | Reversed wheel share that calls for a check JikCheck initial criterion | 5 % | Internal criterion: an initial assumption based on the phenomenon that a worn wheel encoder mixes in events of the opposite sign to the rolling direction. A normal wheel can also produce one or two opposite events when you let go, so a ratio below this is treated as Within criteria. |
| Wheel scrolls the wrong way | Reversed wheel share outside the criterion JikCheck initial criterion | 15 % | Internal criterion: an initial assumption that when at least this share of the events rolled in the guided direction has the opposite sign, hand movement can hardly explain it. |
| Button not registering | Buttons marked as not responding JikCheck initial criterion | 1 | Internal criterion: if the user marks even one button as “pressed but nothing happened”, the result is Outside criteria (user confirmed). The mark is the user's own judgement, so advice to press again and to try another port comes first. |
How to use and FAQ
How do I use the mouse test?
Press Start. Choose "Slow single clicks" and click the left button slowly, many times. Then choose a wheel step and roll the wheel. Press Stop, mark any buttons that did not respond, and choose Show result.
What is the polling rate?
How many times per second the mouse reports its position. The page estimates it from the movement events your browser delivers, so a browser that combines events can show a lower value. It is for reference only.
Why does the wheel step matter?
While you roll the wheel one way, events in the opposite direction can appear when the wheel’s sensor is worn. A few can happen in normal use, so a small share is tolerated.
Is the result proof for an exchange or warranty claim?
No. The result is a reference measurement calculated from signals your browser receives. Follow the seller’s or manufacturer’s rules for exchange and repair.