Reaction Time Test
Click when the screen turns green. Five rounds give your average reaction time in milliseconds. Free, no signup.
Click to start
5 rounds. When the screen turns green, click as fast as you can.
Click, tap, or press Space or Enter. Results include your screen and device lag, so compare on the same setup. Nothing leaves your browser.
What is a good reaction time?
| Under 180 ms | Lightning |
|---|---|
| 180 to 230 ms | Excellent |
| 230 to 290 ms | Average |
| 290 to 380 ms | Relaxed |
| Over 380 ms | Sleepy |
About this reaction time test
This free online reaction time test measures how quickly you respond to a visual signal. The screen turns green after a random delay and the timer stops when you click or tap. Five rounds give an average and a best time, and a rough rating to compare against typical results. It runs entirely in your browser, so there is nothing to install.
Frequently asked questions
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