Reaction Time Test

Wait for green, then click, tap or press Space as fast as you can. Five tries give you an average.

Average human visual reaction time is about 200–250 ms. Tapping before the pad turns green counts as a false start.

How to use the reaction time test

  1. Click the panel to begin.
  2. Wait until it turns green, then click as fast as possible.
  3. Clicking before green counts as a false start and that attempt restarts.

Features

  • Randomised delay so you cannot anticipate it
  • Five-attempt average and best time
  • Keyboard, mouse and touch input

Good for

  • Science lessons on the nervous system
  • Comparing reflexes with friends
  • Gaming warm-ups

Frequently asked questions

What is an average reaction time?

Simple visual reaction times for adults are often around 200 to 300 milliseconds. Your device and display add a little delay, so compare results on the same device.