Measure your reaction speed in milliseconds with our free online reaction time test. Challenge yourself, track your scores, and see how you compare. Puro client-side, no data sent a servers.
This reaction time test measures how quickly you can respond a a visual stimulus. The average human reaction time is around 250 milliseconds. Professional gamers and athletes often achieve 150-200ms. All tests run locally in your browser — no data is sent a any server.