Reaction time test
When the lane turns green, click, tap or press Space as fast as you can. Five valid tries make one round.
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More tests
More reaction time games, each timed the same way.
How it works
How scoring works
Only tries between 100 and 999 ms count. Faster than 100 ms is treated as a guess, and a second or more means you looked away. Switching tabs cancels the try. Your result is the average of five valid tries; the median is shown too. The sentence under your score compares that average with two published numbers: the web median from Human Benchmark and lab averages by age from a study of 1,469 adults.
Your device adds time
Every result includes the time your screen takes to show the change and your mouse or touchscreen takes to report the click. A 60 Hz screen draws a new frame every 16.7 ms, a 144 Hz screen every 6.9 ms. Compare results on the same device.
Why games feel slower
Here you know exactly what to wait for. In a game you also have to spot the target, decide and aim, so reacting there takes longer than this test.
Not a medical test
This is a quick browser test. It can't diagnose ADHD or concussion, and it can't tell you whether you are fit to drive.
Questions
What is a normal reaction time?
On Human Benchmark's online test, the median score is 273 ms.¹ In a lab study of 1,469 adults with calibrated equipment, the average was about 231 ms, and it rises slowly with age.² Online scores run slower than lab scores because your screen and mouse add delay. Our average reaction time page has the full numbers.
Why is my phone slower than my computer?
A touchscreen usually takes longer than a mouse to report a press, and most phone browsers draw the page 60 times a second, so a change can take up to 16.7 ms to appear. Compare scores on the same device, and use a computer with a wired mouse for your fastest result.
Why is my reaction slower in games?
This test tells you exactly what to wait for. In a game you also have to spot the target, decide what to do and aim, which all takes time. Try the FPS reaction test to see reaction plus aiming.
How is my score calculated?
A round is five valid tries. A try counts if it lands between 100 and 999 ms: faster is treated as a guess, and a second or more usually means you looked away. False starts and cancelled tries don't count and are run again. Your score is the average of the five, with the median, best, slowest and consistency shown underneath.
Can this test diagnose ADHD or tell me if I can drive?
No. This is a quick browser test for curiosity and practice. It can't diagnose ADHD, concussion or any other condition, and it can't tell you whether you are fit to drive. If you're worried about your reactions, talk to a doctor.
How do I get an accurate result on a phone?
Close other apps, turn off low power mode (it can lower the screen's refresh rate) and tap with the same finger each time. Your tap counts the moment your finger touches the screen, so you don't need to lift it quickly. Compare scores on the same phone only.
Sources
- Human Benchmark, Reaction Time Test page: “The average (median) reaction time is 273 milliseconds, according to the data collected so far.” Scores from a different website and different devices. Accessed 7 November 2026 humanbenchmark.com/tests/reactiontime
- Woods, D. L., Wyma, J. M., Yund, E. W., Herron, T. J., & Reed, B. (2015). “Factors influencing the latency of simple reaction time.” Frontiers in Human Neuroscience, 9, 131, Table 2: mean simple reaction time by age group, 1,469 adults aged 18 to 65, including 17.8 ms of measured screen and mouse delay. The study prints two of its groups as 46–51 and 51–58. Accessed 7 November 2026 doi.org/10.3389/fnhum.2015.00131