Free Online Reaction Time Test
Measure your visual response in five rounds. Get your median, best time, and consistency score instantlyโno signup required.
Attempt
0 / 5
Current
โ
Median
โ
Best
โ
Activate this button to start. Wait for green, then activate it again as quickly as possible.
Five-round score card
Your reaction time result
Medianโ
Averageโ
Bestโ
Worstโ
Spreadโ
Personal bestโ
Research-based feedback
โโ
Visual benchmark
Where your reaction time sits
This curve places your five-round median against published simple visual reaction-time references. Browser and input-device delay remain inside the score.
How your result compares+
ESTIMATED INDEX ยท NOT A BIOLOGICAL AGE
WEB SAMPLE ยท NOT A CLINICAL COMPARISON
FUN LANDMARK ยท NOT AN EQUIVALENCE
PLAYFUL MATCH ยท NOT A SCOUTING GRADE
The five-round baseline uses your session median. Its percentile and Reaction Age are modeled from a calibrated laboratory study, while the web card is a separate online-sample reference. They are interpretation aids, not medical labels or first-party user statistics. See the percentile and age-group research tables.
Reference notes: Baseline references: a 10,060-person online sample reported a mean near 318 ms and a 301 ms median, while a calibrated adult study reported a 231 ms mean. Animal examples use unlike biological tasks and are shown only as playful context. Web sample study ยท Human study ยท Mole review ยท Fly study
Your consistency is based only on the spread of these five attempts. It is not a population ranking.
Voluntary public results
Help build the public dataset
Publish this result anonymously to the community stats on this page. Only your median, best time, device type, and date are stored โ no name, account, or IP address.
PRIVATE BY DEFAULT โ nothing is sent until you press this button.
Recent results on this device
Select any session, then add it to your private leaderboard.
Saved on this device
Your reaction leaderboard
Choose a test above, add a name and an optional region, then save it. Nothing is uploaded.
| Rank | Player | Region | Median | Tested |
|---|
Choose your protocol
More ways to test your reactions
Choose a protocol that matches what you want to measure. Use the five-round baseline for a quick result, the sprint for a longer speed sample, or the selective test when accuracy matters as much as speed.
01 / SURVIVAL
Reaction Time Game
Practise restraint and timing in an open-ended survival loop. Each valid signal extends the streak, while one early response ends the run and records the result locally.
Play the game โ 02 / SPRINT Reaction Speed TestRun a longer fixed protocol when you want more detail about trial-to-trial variation. Compare the median, best time, average, and spread across ten valid signals.
Start the challenge โ 03 / SELECT Reflex TestMeasure response selection as well as speed. React to targets, ignore distractors, and review accuracy, misses, false alarms, and median target time together.
Test selective reflexes โ 04 / LIGHTS OUT F1 Reaction TestTake the driver's-eye view, wait through the five-light start sequence, avoid a jump start, and finish five clean launches.
Take the grid โHow to Read Your Result
Median is the headline score
The middle of five valid attempts is less sensitive to one unusually fast or slow round than the average.
Consistency shows repeatability
We use the range between your fastest and slowest attempts. A smaller spread means this session was more repeatable.
Compare like with like
Use the same display, browser, input device, and test protocol. A hardware change can move the measured score without changing you.
โ ๏ธ Results depend on your monitor, mouse/trackpad and browser. For comparable numbers, use the same device and browser.
What Does a Reaction Time Test Measure?
A reaction time test measures the delay between a visual signal and your intentional response. In this five-round protocol, wait for the panel to turn green and then click or tap as quickly as possible. After five valid attempts, the tool reports your median, average, fastest and slowest times, spread, and session consistency. The median is the main result because one unusually fast or slow attempt affects it less than the average. Your result still includes display, input-device, operating-system, and browser latency, so treat it as a browser measurement rather than a direct neurological reading.
How the Five-Round Test Works
Step 1: Click to Start
Activate the test panel to begin a round. The panel enters its waiting state and starts a randomized delay.
Step 2: Wait for Green
Keep your pointer or finger ready, but do not anticipate the signal. The panel turns green after a random delay between 1.5 and 4.5 seconds. An early response is rejected and the round must be repeated.
Step 3: Click as Fast as You Can
Respond as soon as the panel turns green. Complete all five valid rounds, then use the median as your headline score. Review the best, worst, spread, and consistency values to understand how repeatable the session was.
Why Take a Reaction Time Test?
A short visual response test can help you track personal performance, practise staying focused, compare testing setups, or satisfy simple curiosity. The most useful comparison is not an isolated fastest click; it is a complete session repeated under similar conditions. Use the same display, browser, input device, and time of day when tracking change. This tool is designed for entertainment, education, and personal tracking. It is not a medical examination, driver-safety assessment, or certified performance test.
What Is a Good Reaction Time?
There is no single cutoff that applies to every person, device, and protocol. A browser score combines your response with display, input, and software delay, so a result is most useful when compared with sessions completed under the same conditions. The broad rating shown after the test is descriptive feedback for this tool, not a diagnosis. The reference percentile and Reaction Age in your result card are modeled estimates for context.
For a more meaningful baseline, complete several five-round sessions on the same setup and compare the medians. A stable personal range is more informative than one unusually fast click. If you want population context, see our average reaction time guide, which explains the modeled reference percentiles and the research data behind them.
Factors That Affect Your Score
Age
Age is associated with gradual differences in simple visual response time, but it does not determine one individual score. A calibrated study reported an average increase of about 0.55 milliseconds per year across adults aged 18โ65. Protocol, practice, attention, and hardware still create substantial variation. Use the age-group research table for context rather than treating one browser score as a biological-age estimate.
Hardware and Display
Your measured time includes display refresh, mouse or touchscreen latency, operating-system scheduling, browser timing, event handling, and your own response. One frame lasts about 16.7 ms at 60 Hz and 6.9 ms at 144 Hz, but frame duration is not the same as guaranteed added latency. Keep your setup fixed when comparing sessions.
Alertness and Fatigue
Sleep, attention, distractions, and time of day can change both speed and trial-to-trial variation. To monitor progress, repeat the full five-round protocol under similar conditions and compare medians rather than selecting only your fastest attempts.
MODELED REFERENCE ยท N = 1,469
Reaction Time Percentiles
Your result card uses a published 1,469-adult laboratory distribution to add a modeled percentile and age-group reference to your five-round median. These estimates provide context; they do not turn a browser score into a clinical measurement.
| Median score | Faster than |
|---|---|
| 170 ms | faster than 99% of adults |
| 180 ms | faster than 98% of adults |
| 200 ms | faster than 88% of adults |
| 220 ms | faster than 64% of adults |
| 231 ms | faster than 48% of adults |
| 250 ms | faster than 23% of adults |
| 280 ms | faster than 4% of adults |
| 300 ms | faster than 1% of adults |
| 350 ms | faster than <1% of adults |
For the full age table, curve assumptions, study protocol, and browser limitations, open the average reaction time guide. Compare personal progress on the same device and input method.
Voluntary public results
Community results from public tests
An anonymous look at how visitors score on this page. Only results you publish voluntarily are included โ no names, accounts, or IP addresses. This is a self-selected web sample, not a calibrated laboratory study.
Distribution of published medians
0100โ119
0120โ139
0140โ159
0160โ179
0180โ199
0200โ219
0220โ239
1240โ259
1260โ279
0280โ299
2300โ319
0320โ339
0340โ359
0360โ379
0380โ399
0400โ419
0420โ439
1440โ459
0460โ479
0480โ499
0500โ519
0520โ539
0540โ559
0560โ579
0580โ599
0600
Median in milliseconds
Desktop 5
Updated 2026-08-29 ยท 5 voluntary submissions in the last 90 days ยท outliers removed automatically.
How to Compare Results Fairly
Finish every valid round
Use the complete session instead of choosing only the fastest click. The median and spread show more than a single best attempt.
Keep the setup fixed
Use the same display, browser, input device, power mode, and input method. Hardware changes can move the measured number without changing your underlying response.
Repeat similar conditions
Compare sessions taken at a similar time of day and note sleep, distractions, and practice. Look for a pattern across complete sessions rather than one unusually good result.
Sources and measurement notes
Our interpretation is intentionally conservative. Research shows that hardware, protocol, preparation interval, age, and attention can all affect simple reaction-time measurements.
- Woods et al. (2015): Factors influencing the latency of simple reaction time
- W3C High Resolution Time specification
- Hudson et al. (2020): Sleep deprivation and vigilant attention review
Read the full methodology, calculations, limitations, and privacy model.
Ready to measure your reflexes?
Start a complete five-round session and review your median, best time, and consistency.
Start Test