How to use the touch sampling rate test
- Open the page on the phone you want to test. The test measures the device you are holding, so load this page directly on your phone or tablet.
- Use one finger and swipe fast. Move your finger in continuous circles or zig-zags across the pad for two to three seconds without lifting.
- Read the Hz result. The large number is the median rate. Check jitter too: a low number means your samples arrive evenly.
- Repeat two or three times. Browsers can batch events, so the best-of-session value is often the most representative.
What is touch sampling rate?
Touch sampling rate is how many times per second your phone's touch controller checks for a finger on the screen. It is measured in hertz (Hz). A 120 Hz touch sampling rate means the screen reports your finger position 120 times every second, or roughly once every 8.3 milliseconds.
Touch sampling rate vs. screen refresh rate
These are two different specs. Refresh rate is how often the display draws a new picture; touch sampling rate is how often the digitizer reads your finger. A phone can have a 60 Hz display and a faster touch layer, or the other way round. To check the display side, use the refresh rate test.
Why it matters
Higher sampling rates reduce the gap between your finger moving and the game or app reacting, which helps in fast shooters, rhythm games and drawing. For everyday scrolling and typing, the difference between 120 Hz and 240 Hz is hard to notice.
How this test measures it
Each pointer event carries a high-resolution timestamp. Where your browser supports coalesced events, the test reads every individual sample that was merged into a frame, which gives a closer look at the hardware rate. Where it does not, the test falls back to normal pointer events, which browsers usually align to the display refresh rate, so the result can read lower than the controller really runs.
Accuracy note: this is a browser-side estimate. Operating systems and browsers may filter or batch touch input, so treat the figure as a practical measurement of what web apps receive, not a lab-grade spec. If you want to confirm the touch layer works across the whole panel, run the touchscreen test as well.
Frequently asked questions
Open this page on your phone, drag one finger quickly across the swipe area for a few seconds, and read the Hz value. The test uses the timestamps of each touch sample to calculate the rate.
About 120 Hz is a solid modern standard. Gaming phones often advertise 240 Hz or higher. Anything near 60 Hz is basic but fine for everyday use.
Browsers often merge touch events into each display frame, and some do not expose individual samples. Try a Chromium-based browser, swipe faster, and run the test a few times.
No. Refresh rate is how often the screen redraws; touch sampling rate is how often it reads your finger. They are measured separately.
A protector does not change the controller's rate, but a thick or poorly fitted one can make touch feel less responsive. Test with and without it to compare.
Yes. It runs entirely in your browser and no touch data is uploaded or stored.