Reaction Time Test
Wait for the box to turn green, then click as fast as you can. Five rounds for your average.
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Click to start
About reaction time
A typical human visual reaction time is 200–300 milliseconds. Athletes and gamers often reach 150–200ms. Your result depends on focus, screen and input lag, and tiredness — try a few times when fresh versus tired and compare. This measures simple reaction (one stimulus, one response), the most basic reflex measure.
Frequently asked questions
What is a good reaction time?
Around 200–250ms is average for a visual cue. Under 200ms is quick; gamers train toward 150ms.
Why did it say 'too early'?
You clicked before the box turned green. Wait for the colour change.
Does my device affect the score?
Yes — screen and input lag add a few milliseconds, so compare on the same device.