Reaction Time Test
How fast are your reflexes? Click as soon as the screen turns green — 5 rounds and your average in milliseconds.
Instant play Works on mobile 100% free No sign-up
How to play Reaction Time Test
- Click Start, then wait for the screen to turn green.
- Click (or press Space) as fast as you can.
- Clicking too early restarts that round.
- Your average over 5 rounds is your score.
Free & fair
Free to play with no sign-up, downloads or in-game purchases.
Nothing is saved: scores last only while this page is open.
Keyboard, mouse and touch controls on desktop and mobile.