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ReactionTestTime

Reaction Time Test

How quickly can you react? Complete five attempts to see your average, best and median time in milliseconds.

Attempts
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Best
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Average
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False starts
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Your results

Complete 5 attempts to see your best, average, median and consistency.

How does your reaction time compare?

Results from submitted ReactionTestTime sessions. One person may contribute multiple sessions.

All statistics

Statistics generated . Session eligibility and exclusions.

Distribution of average reaction times

306 sessions · median 319 ms

Distribution of reaction time test averages180–199 ms: 3.9%200–219 ms: 4.6%220–239 ms: 4.6%240–259 ms: 4.9%260–279 ms: 6.9%280–299 ms: 11.1%300–319 ms: 15.0%320–339 ms: 13.1%340–359 ms: 11.8%360–379 ms: 5.2%380–399 ms: 2.9%400–419 ms: 2.3%420–439 ms: 3.3%440–459 ms: 2.3%460–479 ms: 1.3%480–499 ms: 0.3%500–519 ms: 1.3%540–559 ms: 1.0%560–579 ms: 1.0%580–599 ms: 0.7%600–619 ms: 0.3%620–639 ms: 0.3%700+ ms: 2.0%
Distribution of average reaction times across 306 sessions, in milliseconds.

Each bar shows the share of included session averages. Most bars cover 20 ms ranges; the final 700+ ms bar includes all slower averages. The dashed line marks the median. A small sample can produce uneven bars; the chart does not explain individual scores.

By device

  • Desktop / laptop177 sessions301 ms
  • Mobile107 sessions332 ms

By test (median)

  • Reaction Time Test319 ms
  • Aim Test (different task)507 ms
  • Visual Reaction Test326 ms

Try other reaction tests

Try responding to sound, choosing between signals or clicking targets.

View all tests

Why test your reaction time?

Use repeated runs on the same setup to see how your score varies. Your recent sessions and personal best are stored on this device. Compare each test within its own format, since the signal, decisions and movement differ.

How we measure reaction time

The science behind reaction time

What is a good reaction time?

A useful comparison starts with the same task and setup. In Woods and colleagues' laboratory study, average simple visual reaction time was 231 ms before correction and 213 ms after correction for that study's hardware delays. Experiment 1 included 1,469 adults aged 18–65 using a calibrated laboratory task. That is an external research result, not a benchmark measured on ReactionTestTime.

In the current ReactionTestTime dataset, the Reaction Time Test has a median session average of 319 ms across 306 eligible sessions. Sessions are completed runs, not necessarily different people.

Device differences, repeat submissions and the people who choose to take the test limit comparisons with a laboratory sample. Compare your own sessions on a consistent setup. For more context, explore session percentiles or results by self-reported age.

Explore the statistics Read the guide

Interpreting simple visual reaction time

  • Under 180 ms
  • 180 to under 220 ms
  • 220 to under 300 ms
  • 300 to under 400 ms
  • 400 ms and above

These bands are editorial guidance, not validated population norms, percentile boundaries or clinical cutoffs. These ranges do not establish what most visitors score. Use the Reaction Time Test statistics for comparisons with submitted sessions.

What happens in those few hundred milliseconds

You see the signal, your brain processes it, and you press. Your screen, software and input device also affect the recorded time.

Measurement methodology

Frequently asked questions

What is a good reaction time?
There is no single good score for every device and test. Compare your session average with results from the same test, and compare your own progress using a consistent setup. Our score bands are guidance rather than universal norms.
How is reaction time measured here?
After a random wait of 1.5–5 seconds, the test changes the screen and records a browser timestamp associated with that update. It measures the interval to your press using browser timestamps. This does not directly measure when the display physically emits light. Saving happens afterwards and is separate from the measured interval.
Why are my results different every time?
Reaction time naturally varies from trial to trial because attention, anticipation and motor readiness fluctuate. That's why we use five attempts and report the median and standard deviation as well as the average.
What counts as a false start?
This test excludes presses before the signal and recorded responses below 100 ms. That is a scoring rule intended to reduce anticipated responses; it does not prove why an individual press occurred.
Can I improve my reaction time?
Repeated runs on the same setup can help you observe changes in your scores. A lower browser score can reflect familiarity, testing conditions or device delay; it does not by itself establish an improvement in general reaction ability. For practical next steps, see our training drills and broader improvement guide.
Is this test accurate?
The test records browser event timing, including effects from your display, input device and software. It can help you observe changes across repeated sessions on the same setup, but it has not been established here as a calibrated laboratory or medical measurement. See our hardware latency guide.

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