Reaction time · Human Benchmark median
How fast are you, really?
Five trials. Click the moment the panel turns red — we'll average them and place you against the published distribution.
Trial 1 of 5
How this test works
Each trial waits a random 1.5 to 4 seconds before the panel turns, so the moment can't be anticipated. Your time is measured with the browser's high-resolution clock, from the frame the panel changes to the moment your click lands. Clicks before the change, or under 80 milliseconds after it — faster than human reaction physically allows — are counted as false starts and don't score. The percentile is a log-normal approximation anchored to Human Benchmark's published 273 ms median, not a measurement against our own dataset. Everything runs in your browser.