Reaction Test

Click as soon as the box turns green. Lower is better.

Last–

Average–

Best–

You can also press Space or Enter. Your best time is saved in this browser.

How to play

Press the box to start. Wait until it turns green and click as fast as you can. Click too early and you have to start over. Most people react in 200–300 milliseconds.

Tips

Look at the whole box instead of staring at one spot.
Don't guess. Early clicks don't count.
The average of your attempts is a fairer score than one lucky click.