Tap as fast as you can the moment the red screen turns green. We measure 5 rounds and show your average reaction time and grade.
We measure 5 rounds total. If you tap too early, you redo just that round.
Reaction time is the time it takes for your body to move after you perceive a stimulus. It includes the whole process: your eyes detect a color change, your brain judges the signal, and a command is sent to your finger muscles. This test measures the most basic form — a simple reaction time to a visual stimulus — in milliseconds (ms, one-thousandth of a second).
In the Human Benchmark statistics, which collect data from users worldwide, the average visual reaction time is known to be about 273ms. Under 200ms is quite fast, and if you are tired or your device has high input delay, it can exceed 350ms. Factors that affect reaction time and the average benchmarks are covered in the Reaction Time Guide.
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| 5-Round Average | Grade | Interpretation |
|---|---|---|
| Under 200ms | Very Fast | Top-tier reaction speed |
| 200–249ms | Fast | Faster than the public average |
| 250–299ms | Average | A typical range (includes the public average of about 273ms) |
| 300–349ms | Normal | May reflect your condition or device delay |
| 350ms or more | Slow | May be due to accumulated fatigue or high touch-device delay |
Grades are based on your 5-round average. We judge by the average rather than a single record because your focus and input timing vary slightly from round to round.
Q. What is the average reaction time in ms?
In the reaction time statistics from Human Benchmark, which collects data from users worldwide, the average is about 273ms. In this test, an average of 250–299ms falls in the average range, and under 200ms is considered quite fast.
Q. Why does my result change every time I measure it?
The moment it turns green is random, so you cannot predict the stimulus, and your focus, fatigue level, and your device's input delay vary slightly each time. That is why a 5-round average is more accurate than a single result.
Q. What happens if I click too soon?
If you click before it turns green, that round is invalidated and is not included in your record. You redo the same round, and the test continues until 5 valid records have been collected.
Q. Is a PC better than a mobile device for this test?
Generally, yes. A mouse click and a high-refresh-rate monitor have low input delay, while a smartphone touch often adds tens of milliseconds during screen input processing. Comparing results on the same device and in the same environment is the fairest approach.
Q. Are my best records saved?
Yes. Your best single record and best average record are saved in the browser you are using, so they are shown right away when you visit again. Records are not sent to a server and remain only in this device's browser.