LIVE DIAGNOSTIC
Input stays in this pageMouse Hz test
Start the test, then move the mouse quickly and continuously inside the panel for eight seconds. Keep this tab active.
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NovaTools / NovaTools Test Lab / Mouse Polling Rate Test — Check Mouse Hz Online
MOUSE HZ CHECKER · PLAYER TOOL
Mouse Polling Rate Test — Check Mouse Hz Online
Measure how frequently your browser receives mouse movement samples. Run a controlled test, move the mouse continuously inside the test area, and compare average, peak, median rate, timing jitter and stability.
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What the polling-rate test reports
- Average browser-observed event rate in Hz
- Peak short-window event rate
- Median event interval converted to Hz
- Timing jitter between movement samples
- Stability score based on interval consistency
- Sample count and the browser event path used
How to interpret the result
Common mouse firmware settings include 125, 250, 500 and 1000 Hz, with some gaming mice offering higher modes. This page measures events observed by the browser, so the value may be lower or less stable than the mouse firmware setting, especially at very high rates.
QUICK WORKFLOW
How to use this test
Use repeatable conditions. One browser result is a diagnostic clue, not a complete hardware verdict.
01
Start
Press Start 8-second test.
02
Move continuously
Use fast circles or side-to-side movement inside the measurement area. Avoid stopping during the sample.
03
Keep conditions consistent
Leave this tab focused and use the same browser, connection and mouse profile when comparing results.
04
Repeat
Run two or three passes and compare the typical result rather than relying on one peak number.
METHOD & LIMITATIONS
Technical reference: MDN — PointerEvent.getCoalescedEvents() ↗What the browser can — and cannot — tell you
Browsers can coalesce pointer events, throttle background tabs and schedule input differently. Where supported, this test uses raw/coalesced pointer data to improve sampling, but it is still a browser estimate — not a USB protocol analyzer or proof of end-to-end input latency.
Common questions
Why does the result look lower than my mouse setting?
Browser event coalescing, display timing, operating-system scheduling, connection mode and background throttling can all reduce the rate observed by a web page.
Should I use average or peak Hz?
Use the average and median as your main comparison, then look at peak and stability for context. A single very high peak is less useful than a repeatable run.
Can this test measure 4000 Hz or 8000 Hz accurately?
It may observe high-rate input on some browser and system combinations, but very high polling modes are more likely to be limited by browser event delivery. Treat the result as a comparative browser measurement.
Does the test upload mouse movement?
No. Movement timestamps are processed locally in the page and discarded when the session ends.