Test your mouse resolution, polling rate, every button, the scroll wheel and your double-click speed. Everything runs locally in this page — nothing is uploaded.
Put a ruler against the screen and move your mouse exactly 10 inches (25.4 cm) to the right, then press Measure. Keep the physical distance honest — that is what makes the number real.
Typical gaming mice: 400–1600 DPI. Office mice: 800–1600. Anything above 3200 is usually a gaming sensor at high sensitivity.
Click each button below. Right-click is captured so the browser menu never appears. The scroll box also counts wheel notches.
Shake or slide the mouse continuously for a few seconds. We count mousemove events per second.
Standard mice: 125 Hz. Gaming mice: 500, 1000 or 8000 Hz. Browsers often cap this below hardware capability, so treat it as a floor, not a ceiling.
Double-click the box as fast as you comfortably can, three times. Faster is not always better — too fast causes accidental double-clicks.
Under 250 ms is normal. Under 180 ms often means your double-click speed setting is cranked up. Above 400 ms is worth lowering in your mouse software.
DPI (dots per inch) is how far the cursor travels per inch of mouse movement. Higher DPI means you cross the screen with less physical movement. 400–1600 suits most desks; 800–3200 suits gaming.
Polling rate is how often your mouse reports its position to the computer, measured in Hz. Higher is smoother but uses more CPU. Note that browsers frequently cap the observed rate, so the number here is a lower bound.
Double-click speed is the maximum gap between two clicks that still registers as a double-click. The default is usually 500 ms; Windows lets you shorten it to 180 ms in Mouse Settings.
Usually wireless interference or a polling rate above what your USB port can sustain. Try a shorter USB extension away from USB 3.0 ports, or lower the polling rate to 500 Hz.
The double-click speed is set too low. Raise it to 400–500 ms in your OS mouse settings.
Pointer acceleration is on. Turn off "Enhance pointer precision" (Windows) or "Pointer acceleration" (macOS) and re-run the DPI test.
No. Every measurement runs with JavaScript on this page. Your mouse movements never leave your browser.
Between 800 and 1600 for most setups. Competitive shooters often run 1600–3200 for large flicks; heavy MMO or MOBA play usually sits lower for control.
Because the browser coalesces mouse events and the display refresh limits observation. A 1000 Hz mouse commonly reports 125–500 Hz in a web page. The hardware is fine; the page cannot see every event.
It runs, but trackpads report device-independent movement, so the DPI figure is not physically meaningful.