Mouse Tester

Start the 10-second CPS test and click as fast as you can. The tester counts every mousedown event and calculates clicks per second in real time. Average users reach 6–8 CPS. Jitter clicking (tensing your forearm) hits 10–14 CPS. Butterfly clicking (alternating two fingers) can exceed 15–20 CPS. Drag clicking on mice with textured buttons can reach 30+ CPS.

Move your mouse exactly one inch along a ruler and note the pixel displacement shown in the tester. At 800 DPI you should see approximately 800 pixels of movement. At 1600 DPI, ~1600 pixels. Significant deviation from your DPI setting suggests your sensor or mousepad surface needs attention. Different surfaces can affect optical sensor tracking accuracy.

Polling rate is how often your mouse reports its position, measured in Hz. Move your mouse rapidly across the test area — the tester estimates polling rate from the interval between mouse movement events. Standard mice: 125 Hz (8 ms interval). Gaming mice: 1000 Hz (1 ms). High-end mice: 4000–8000 Hz (0.25–0.125 ms). USB connection is required for accurate measurement; Bluetooth typically drops to 125 Hz.

Yes. The tester detects Left (Button 0), Middle/Scroll Click (Button 1), Right (Button 2), Back (Button 3), and Forward (Button 4). Each button press is counted individually. Buttons beyond 4 (extra gaming buttons, DPI switch) typically require manufacturer software and don't generate standard browser events.

Scroll up and down in the test area. The tester tracks scroll delta values and cumulative distance. Healthy scroll wheels produce consistent, equal step sizes. Erratic values, missed steps, or unintended direction reversals indicate a dirty or failing rotary encoder. Most mice report in increments of 100–120 pixels per scroll notch.

Click slowly and deliberately — one click per second. Watch the button counter: if it increments by 2 from a single physical click, your micro switch is bouncing (double-clicking). Events less than 50 ms apart from a slow click are definitive proof. This is the most common failure mode in Omron D2FC switches. Fixes: replace the switch ($1–3 part, requires soldering), or use debounce software as a temporary workaround.

Yes. All gaming mice are supported — Logitech (G Pro, G502, G305), Razer (DeathAdder, Viper), SteelSeries (Rival, Aerox), Corsair (Katar, Sabre), Zowie, Pulsar, Lamzu, Finalmouse, and more. High polling rates (1000 Hz+), high DPI (up to 30,000+), and all standard buttons are fully detectable. Mice with optical switches (Razer, some SteelSeries) are also supported.

Yes. Laptop trackpads and external trackpads (Apple Magic Trackpad, etc.) register click, scroll, and movement events. Tap-to-click and two-finger scroll work normally. Force click generates a standard click event. Multi-touch gestures beyond scroll are handled by the OS and aren't individually testable in the browser.

LOD is the height at which your mouse sensor stops tracking. Lift your mouse slowly while watching the movement display. When cursor position stops updating, you've found your LOD. Gaming mice typically have 1–2 mm LOD. Higher LOD can cause unwanted cursor movement when repositioning your mouse.

Common causes: 1) Bluetooth connection — most mice drop to 125 Hz on Bluetooth; use the USB dongle or wired mode. 2) Power saving — wireless mice reduce polling rate when idle; move actively during measurement. 3) Browser throttling — background tabs receive fewer events; keep the tester focused. 4) OS USB power management — disable USB selective suspend in Windows power settings.

Mouse acceleration (pointer precision) makes the cursor move further when you move the mouse faster. Move your mouse the same distance slowly then quickly — if the pixel displacement differs significantly, acceleration is enabled. To disable: Windows → Mouse Settings → 'Enhance pointer precision' OFF. macOS → System Settings → Trackpad → disable acceleration (or use third-party tools).

Yes. It is free with no downloads and no display ads. Mouse events are processed locally in your browser, and test values are not sent to any server. Affiliate recommendation events, when present, only measure anonymous recommendation views and clicks.