Reaction Time Test

A quick check of your reflexes. Wait for the signal, react the instant it appears, and get your average over five tries.

How to play Reaction Time Test

• Tap the panel, click it or press Space to begin. It turns red: wait.
• After a random pause of a couple of seconds, it turns green. React as fast as you can.
• Jump the gun while it is still red and you get Too soon! — that try is simply repeated.
• After five good tries you get your average, your fastest time and your slowest one.
• Your recent sessions are listed under the panel, and your best average is saved on this device.

Controls

• Tap / click the panel or press Space / Enter — start and react
• The Restart button clears the current set of tries

Tips

• Rest a finger on the screen or the Space bar so you only have to press, not move.
• Watch the whole panel rather than a single spot; the change is easier to notice.
• Times vary with your device and screen, so compare yourself on the same setup.

FAQ

What is a good reaction time?

Most people land somewhere around 200–300 ms for a simple visual signal like this. Anything under 200 ms is very quick.

Why does the wait change every time?

The pause is random, between about one and a half and five seconds, so you can’t learn the rhythm and press early.