REACTION TIME
Reaction test, how fast are you?
Click to start, wait for the pad to turn green, then click (or press Space) the instant it does to measure your reaction in milliseconds. Clicking early counts as a false start. Best, average and attempts are tracked, and results are shareable.
Everything runs locally in your browser
Solution animation · result distribution
No results yet — tap the pad above a few times and your distribution will be plotted here.
How to play
Click the pad to arm it; after 1–3s it turns green — click or press Space instantly to get your milliseconds. Average people are ~200–300ms; esports players ~150ms. Clicking early is a false start and that try is discarded.
FAQ
Is it accurate?
It uses performance.now() millisecond timing, fully local. Take the average of several tries for a better reference.
Are results saved?
Only in your browser localStorage to show your best; clear to delete. Nothing is uploaded.