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Reaction Time Test

Test how fast your reflexes are in milliseconds

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About Reaction Time

Reaction time is the interval between a stimulus and your response. This test measures visual reaction time. Professional athletes train extensively to minimize their reaction times.

Human reaction time: the normal ranges

The average visual reaction time for a healthy adult is 200–250 milliseconds. Sound is faster at 140–160 ms and touch faster still at around 150 ms, because auditory and tactile signals reach the brain through shorter processing paths than vision does.

Typical reaction times by stimulus

StimulusAverageTrained / athlete
Visual (a colour change on screen)200–250 ms150–180 ms
Auditory (a beep)140–160 ms120–140 ms
Touch150–160 ms110–130 ms
Choice reaction (pick one of several responses)300–450 ms250–300 ms
Driving — perception plus braking action1.5 s (design standard 2.5 s)1.0–1.2 s

How reaction time changes across a lifetime

AgeTypical simple visual reaction time
Under 10250–300 ms
10–19190–230 ms
20–29190–220 ms — the lifetime peak
30–39200–230 ms
40–49210–245 ms
50–59225–265 ms
60–69250–300 ms
70+280–350 ms

What your score is really measuring

A click test measures four things stacked together: the display latency of your monitor, the time your eye and visual cortex take to register the change (about 80–100 ms), the decision and motor command (about 60–80 ms), and the input lag of your mouse or touchscreen. On a 60 Hz display the frame interval alone adds an average of 8 ms and up to 17 ms, and a wireless mouse can add another 5–10 ms. A 144 Hz screen with a wired mouse will flatter your score by 20–30 ms against a laptop trackpad on the same brain.

Getting a number you can trust

  1. Take at least five trials and use the median, not the mean — one distracted attempt of 600 ms drags an average badly.
  2. Discard anything under 100 ms. That is faster than nerve conduction allows; it means you anticipated rather than reacted.
  3. Use the same device and screen each time you compare. Cross-device comparisons are close to meaningless.
  4. Test at the same time of day. Reaction time is measurably slower in the first hour after waking and in the late afternoon dip.
  5. Sit at a consistent distance with your hand already resting on the button.

What actually slows you down

More questions people ask

What is a good reaction time?

For a simple visual click test, anything from 200 to 250 milliseconds is average for an adult. Under 200 ms is fast, and consistently under 180 ms is athlete or competitive-gamer territory.

Why is my reaction time slower than the average?

Usually equipment before biology. A 60 Hz laptop screen, a wireless mouse and a trackpad together can add 30 ms or more. After that, sleep debt, time of day and divided attention are the biggest movers.

Is auditory reaction time faster than visual?

Yes, by roughly 50 to 90 milliseconds. Sound reaches the auditory cortex through fewer processing stages than an image does through the visual system, which is why sprint starts use a gun rather than a light.

Can you improve your reaction time?

Somewhat. Practice on a specific task reliably improves performance on that task by 10 to 20 %, and sleep, hydration and moderate caffeine all help. The underlying nerve conduction speed is largely fixed, so the gains come from the decision and motor stages.

How does reaction time affect driving?

Road design assumes a 2.5 second perception-reaction time, though alert drivers average about 1.5 seconds. At 100 km/h a car covers 28 metres per second, so half a second of extra delay is 14 metres of additional stopping distance before the brakes even engage.

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Frequently Asked Questions

What is average human reaction time?
Average visual reaction time is about 250ms. Athletes and gamers often achieve 150-200ms. Under 100ms may indicate anticipation rather than reaction.
How to improve reaction time?
Regular exercise, adequate sleep, staying hydrated, playing video games, and practicing reaction drills can all improve reaction time.
Does age affect reaction time?
Yes, reaction time typically peaks in the mid-20s and gradually slows with age. However, practice and fitness can mitigate this decline.

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