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Reaction Time Test
Click the moment the screen turns green. Five rounds, then your average.
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About this test
Average visual reaction time in adults sits between 200 and 300 milliseconds. It depends on age, tiredness and caffeine, but also on your hardware: a 60 Hz screen adds around ten milliseconds on its own.
How it works
The screen turns green after a random delay of 1.2 to 4.4 seconds. We measure the gap between that moment and your click. Going too early voids the round.
This test is provided for entertainment purposes only. It is not a diagnosis or professional advice.