How to use
- Open this page in Chrome or Edge.
- Move the mouse quickly and continuously in circles inside the box and watch the live number.
- Keep moving for a few seconds and check the average and highest values. The nearest standard rate is your mouse’s current setting.
Options explained
- Polling rate
- How many times per second the mouse reports to the computer. 125 Hz reports every 8 ms, 1000 Hz every 1 ms and 8000 Hz every 0.125 ms.
- Interval jitter
- The standard deviation of the gap between reports. Lower means more even reporting; wireless mice and busy computers show more.
Polling rates and their intervals
The interval between reports is 1000 divided by the rate in Hz. The page reports the standard rate closest to your reading when it is within 8% of it; otherwise it shows the measured number rounded.
| Polling rate | Interval between reports |
|---|---|
| 125 Hz | 8 ms |
| 250 Hz | 4 ms |
| 500 Hz | 2 ms |
| 1000 Hz | 1 ms |
| 2000 Hz | 0.5 ms |
| 4000 Hz | 0.25 ms |
| 8000 Hz | 0.125 ms |
Use these numbers to read the jitter value too: at 1000 Hz a jitter of 0.1 ms is about a tenth of the interval, which is quite even, while a jitter close to 1 ms means reports are arriving unevenly.
Frequently asked questions
Why is the result lower than advertised?
Browser timestamps have limited precision, and a busy computer, USB port or hub can cap the rate. 8000 Hz mice often read around 4000–5000 in a browser. A peak near the advertised value means the setting works.
Does it work in Safari or Firefox?
Chrome and Edge expose raw pointer events and are the most accurate. Other browsers can only estimate from coalesced events, and some only reach your screen’s refresh rate.
Is a higher polling rate always better?
It makes the cursor more responsive but uses more CPU, and some older games stutter above 4000 Hz. 1000 Hz is plenty for most people.
Privacy
This tool runs entirely in your browser. Your files and text are processed on your device and are never uploaded to our servers.