Measure the mouse events your browser receives

Move across the pad to measure browser-delivered pointer events. The live chart, run average and peak use those events only.

Move your mouse inside this area

Ready. Nothing is uploaded.

Event trace

Recent events appear here. Export keeps the full capture until the capture limit is reached.

Is this my USB polling rate?

No. The live rate counts delivered pointermove events in the last second. The run average divides intervals between events by elapsed seconds. The peak is the largest rolling one-second event count in this run.

What this browser can measure

The browser and operating system can merge, delay or cap movement events. This page does not promise the device’s USB polling frequency or raw input. See the event and timing rules.

Try the related task

Mouse test: Press each mouse button and see down, up and repeat events immediately, with honest limits on hardware diagnosis.
Scroll speed test: Scroll to see direction, event rate and a live trace, then reset and compare another run without uploading input data.
Gamepad test: Connect a controller and inspect every button, trigger and stick value live, including drift and browser-support limits.