Mouse Polling Rate Estimator

Polling rate is how often the mouse reports updates, for example 125, 250, 500, or 1000 Hz. In the browser we observe pointermove timing and estimate Hz from the median interval.

• Works entirely in the browser with no installs. • Median-based Hz estimate plus jitter. • Histogram view for interval distribution. • JSON export of raw intervals. • Useful for quick sanity checks after driver or USB changes.

1) Click Start. 2) Move your mouse continuously in the area for 3-10 seconds. 3) Check the estimated Hz and jitter. 4) Export JSON if you need to share the raw intervals.

• Source: pointermove events captured in a single element. • Estimate: 1000 / median(interval_ms). • Jitter: sample standard deviation of intervals, which requires enough samples. • Browser and OS scheduling can clamp event frequency, often near display refresh.

• Verify 125, 250, 500, or 1000 Hz after changing mouse software settings. • Compare USB ports or hubs for stability. • Spot heavy jitter caused by CPU load or background apps. • Quick check when troubleshooting aim or feel inconsistency.

Q: Why do I only see about 60-125 Hz? A: Many browsers coalesce pointer events, and your display refresh rate and system load can limit event delivery. Q: How many samples do I need? A: More is better. Aim for a few seconds of steady movement so the median and jitter stabilize. Q: Why is jitter shown as "-"? A: Collect more samples by moving longer to reach the minimum sample count. Q: Does DPI affect the result? A: DPI changes how far the pointer moves per report, but it should not change report frequency. Very slow movement can still reduce event delivery. Q: I am on a touchpad or stylus. Does this still work? A: It will show event timing, but it may not represent mouse polling rate. Check the detected pointer type hint. Q: Tips for more stable readings? A: Close heavy apps, keep the tab focused, and move the mouse smoothly at a consistent speed.