Reaction Time Test
Tap the moment the screen turns green to measure reaction time in ms; five rounds give an average and median compared with the public 273 ms median.
Loading the tool…
User reviews
No reviews yet. If you’ve used this tool, be the first to leave one.
How to use
Everything you enter is processed only in this browser.
Tap the large area to start
Tap as soon as red turns green
After five rounds, check your average and median
How it works and good to know
The signal comes at a different moment each time, between 1.5 and 4.5 seconds. Taps before the signal or within 0.1 seconds after it count as early and aren’t recorded. Time is measured on one clock from the frame where green is drawn to the tap event, but monitor display and input device lag are included. The comparison baseline is the 273 ms median from Human Benchmark’s public statistics (checked 2026-09-30). Results aren’t saved.