Reaction time
How fast do you react?
Click the box to start. When it turns green, click as fast as you can. Clicking early restarts the round.
What’s a good reaction time?
Most people score 200–300 ms. Under 200 ms is fast, and many pro players sit around 150–180 ms.
Does my mouse or monitor change the score?
Yes. A 60 Hz screen can add up to 16 ms and a wireless mouse with a slow polling rate adds a few more. Use the same setup each time to compare fairly.