Online reaction test

Reaction Time Test: tap when it turns green

Also known as: reaction time test online, reaction speed test, test your reaction time, reflex test

The box is red. After a random delay it turns green, and you need to tap it as fast as you can. Five tries in total. At the end you’ll see your average and best time in milliseconds and a rating based on the trainer’s benchmarks. You can start right away, no sign-up. Your result is free once you enter your email: we’ll show it to you and send it to your inbox.

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5 triesabout a minute
Millisecondsaverage and best time
No sign-up10 minutes a day
Progressresults are saved

What it trains

What the reaction test measures

The test measures simple visual reaction time: how much time passes from the moment green appears to your tap. That time includes noticing the signal, deciding to tap and the finger movement itself.

Most adults land somewhere between about 200 and 300 milliseconds on a test like this, but your device, screen, mouse or touchscreen and tiredness all affect the result. So compare your own tries with each other rather than with other people. The test is not a diagnosis and does not replace an assessment by a professional.

You want to check your reaction timeFive short tries and a clear result in milliseconds
You game or driveIt helps to know your usual speed and keep an eye on it
You need a focus warm-upA short task to get sharp before work
You’re curious to compare triesResults are saved, so you see how your time changes

Reaction speed

How fast you notice the signal and tap.

Self-control

Not tapping too early: a false start costs points.

Consistency

How even your reactions are from try to try.

Alertness

Staying focused while you wait for the signal.

Rules

How to play

Start
Press “Start”. A red box appears that says “Wait for green”.
Wait
After a random delay (from one and a half to four seconds) the box turns green. Tap earlier and it counts as a false start, and the try is repeated.
Tap
As soon as the box turns green, tap it or press the space bar. Your time appears on the screen.
Repeat
Do five tries. At the end you get your average time, best time, number of false starts and a rating.

Play online

Reaction time test online

Press “Start” and wait for the box to turn green. You can play 10 minutes a day without signing up.

Reaction Time Test

Five tries: the box is red, then turns green. Tap it as fast as you can. At the end you’ll see your average time in milliseconds and a rating based on the trainer’s benchmarks.

Free play left today without signing up: 10 min

Method

Where the test comes from

Measuring reaction time is one of the oldest methods in experimental psychology: it has been used since the 19th century to compare how fast different people process a signal under different conditions. Simple reaction to a single signal is considered the most basic version.

In our version there is one signal, it appears at a random moment, and accuracy is limited by your device: touchscreens and monitors have their own lag of tens of milliseconds. To keep the timing fair, we record the moment you touch the screen, not the moment the click is released. If you want choice reaction (“tap on green, don’t tap on red”), try Stop Signal.

5TriesEach with a new random wait.

1.5–4 sWaitRandom time before the green signal.

msResultAverage, best time and a rating.

Who it’s for

Which ages

Adults

A quick check of reaction speed and alertness. Great for anyone who likes to compare their own results over time.

Kids

Good for school-age kids: there’s one rule, just tap fast. For very young children it may be too fast.

60+

You can tap anywhere on the large box, and nobody rushes you: if you don’t tap, the try simply waits.

Questions

Frequently asked questions

What is a normal reaction time?

For simple visual reaction, most adults get roughly 200 to 300 ms. On phones and in some browsers the result may be a bit higher because of screen lag. Our benchmarks: under 200 ms is very fast, 200–250 fast, 250–300 average, 300–400 below average, slower than that is slow.

Why does my result vary from try to try?

Reaction depends on attention, tiredness, how you hold your hand and random device delays. That’s why the test gives you five tries and an average instead of a single number.

What is a false start?

Tapping before the green appears. Each false start costs points, and the try starts over. It’s not a bug in the test, it’s a check of self-control.

Can I improve my reaction time?

A little: sleep, a warm-up and getting used to the task help. But the test doesn’t promise to “boost” your reaction, it’s simply a way to measure it and see how it changes.

Is this a medical test?

No. It’s a game-style test of simple reaction. It doesn’t diagnose anything and doesn’t replace a doctor’s consultation or a professional assessment.

Save your results and track your progress

Free sign-up: round history, a chart by skill and a daily workout of 5 exercises. No credit card needed.

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Reaction Time Test: tap when it turns green