CLICK TO START
BEST TIME
-- ms
AVERAGE
-- ms
How to Play
Wait for the screen to turn GREEN, then click as fast as you can! Don't click too early or you'll be disqualified. Test average of 5 tries to get your final score.
Wait for the screen to turn GREEN, then click as fast as you can! Don't click too early or you'll be disqualified. Test average of 5 tries to get your final score.
Test your reflexes! How fast can you respond when the screen turns green?
Runs right in your browser — no install, no plugins, no waiting.
No sign-up, no paywall, no hidden costs. Just open it and play.
Play on desktop, tablet, or phone with touch-friendly controls.
No downloads to worry about — the whole game loads in seconds.
Yes — Reaction Time Test is completely free to play on Script & Tools, with no sign-up required.
No. Reaction Time Test runs directly in your web browser, so there is nothing to download or install.
Yes, Reaction Time Test works on mobile and tablet browsers with touch controls, as well as on desktop.