Reaction time test
Click the moment the panel turns green. Five tries, then your average in milliseconds.
- tries
- 5
- minute
- ~1
- no sign-up
- Free
What affects your time
Your device
Screens and mice add delay, often 20 to 50 ms. A wired mouse and a fast screen give lower times.
Your state
Sleep, caffeine, age and practice all change reaction time.
Guessing
Clicking too early shows a warning, and the try does not count.
More tests
Questions
What is a good reaction time?
On a computer, an average of 200 to 250 ms is fast. Most people land between 250 and 320 ms.
Does reaction time relate to IQ?
Slightly. Studies find a small link between quick, consistent reactions and reasoning scores, but it says little about one person.