Reaction time test: how fast are you?

Tap the box the moment it turns green. Five rounds, about 30 seconds, and you see your median and best reaction time in milliseconds. Free, no sign-up.

• 5 rounds
• 30 seconds
• Median + best time
• Free, no sign-up

How the reaction time test works

Tap to start. The box turns red: wait. After a random pause between 1.5 and 4 seconds it turns green: tap as fast as you can. Tapping too early restarts that round. After 5 rounds you see your median time (the middle of your 5 rounds, so one lucky or slow round does not decide your score) and your best round.

What affects your result

Your device matters: phone touch screens and some displays add a few dozen milliseconds of delay, and a mouse is usually faster than a touch screen. Tiredness, distraction and warm-up matter too. Compare your time with friends on the same kind of device, and take the test a few times.

Simple reaction time

This is a simple reaction time test: one signal, one response. Tests with a choice between signals are slower, because your brain first has to decide. Practice lowers your time a little; most of the gain comes from paying full attention.

More free tests

Want to know how fast your fingers are on a keyboard? Take the free 1-minute typing test or learn touch typing in the typing course. Curious about your personality? Try the free Big Five personality test.

Frequently asked questions

More practice tests