Mouse Polling Rate Test
A mouse Hz test that tells the truth. Move your mouse in fast circles for 5 seconds. The page counts how many movement updates per second your browser receives and shows the nearest common polling rate. This is a lower bound: browsers, the operating system and CPU load can hide a faster polling rate, and no web page can confirm 4000 or 8000 Hz. Use your mouse maker's software for the exact setting.
1. Test
Click, hold and scroll inside this box.
| button | clicks | shortest gap | double-clicks |
|---|
Click each button a few times inside the box: left, right, the wheel (middle), and the two side buttons if your mouse has them. The right-click menu and back/forward navigation are blocked while the test runs.
Advanced
2. Result
Is it the mouse or the computer?
Save the JSON here, run the test again with the mouse on another computer or USB port, then load the first file. If the same problem shows up on both, it follows the mouse.
In this browser
About the Mouse Polling Rate Test
How to use it
- Use Chrome or Edge for the most detailed reading, and close heavy programs.
- Press Start test. The Event rate tab is already open.
- Press Measure for 5 seconds and move the mouse in fast, continuous circles inside the test area until the countdown ends.
- Repeat once or twice; take the highest steady result.
What this page focuses on
- Uses the browser's raw pointer updates and coalesced events where available, the most detailed movement data a page can get.
- Reports the typical and peak rate with a histogram, and says which common rate (125, 250, 500, 1000 Hz and up) it is near.
- Says plainly that the figure is a lower bound, and does not claim to verify 4000 or 8000 Hz.
- Turns timing verdicts off in browsers that deliberately blur timers (for example Firefox with fingerprinting protection).
Reading your result
- About 125, 250, 500 or 1000 Hz: The browser received roughly that many updates per second, close to a common mouse setting. Your mouse's real rate is at least that.
- Lower than your setting: Browsers can merge updates to the screen's refresh rate and busy computers drop some. It does not mean the mouse is slower than its setting.
- Fastest bursts: The highest rate seen over short stretches. It hints at the real rate when the typical figure is held back by the browser.
Why does it show less than my mouse's setting?
Browsers can merge movement updates to match the screen's refresh rate, and CPU load or power saving can drop some. A lower number here does not mean the mouse is slower than its setting.
Can a website measure 8000 Hz polling?
Not reliably. Pages that claim exact 4000 or 8000 Hz from a browser are overstating what they can see. Your mouse's own software reports the true setting.
Which browser gives the most accurate reading?
Chrome and Edge give the most detailed movement data. Firefox and Safari usually report fewer updates.
What a browser cannot test
Extra buttons beyond back/forward are usually handled by the mouse's own software (this page shows it when they are mapped to keys). Firefox often does not report side buttons to pages. No web page can measure click latency, sensor DPI or the true polling rate; the event rate shown is a lower bound.
Privacy
The test runs entirely in your browser. Nothing you press is uploaded, and nothing is saved after you close or refresh the page. Saved files are created on your device and only go where you send them.