Reaction Time Test

How the reaction time test works

This free reflex test and reaction time game measures your reaction speed and human reaction time across five rounds. After you arm a round, the screen waits a random 1.5 to 5 seconds so you cannot predict the signal. Timing starts with performance.now() the instant the area turns green and stops on your click. The average human reaction time on a simple visual stimulus is between 200 ms and 250 ms.

Reaction time benchmarks

• Under 180 msExceptional — re-test to rule out anticipation.
• 180–220 msExcellent — faster than roughly 9 in 10 people.
• 220–280 msAverage adult range on a visual click test.
• 280–350 msNormal, especially on trackpads or older phones.
• Over 350 msBelow average — check focus, sleep and your setup.

How to get a faster, fairer score

1. Use a real mouse on a desktop — trackpads and touchscreens add latency.
2. Rest your finger lightly on the button instead of hovering far above it.
3. Look at the whole test area, not one corner, so the green change hits your central vision wherever you look.
4. Take five calm rounds rather than one lucky attempt — the average is the honest number.
5. Close heavy tabs and pause downloads; a busy browser delays both display and input.

How this test works

• What Is a Good Reaction Time? (ms Benchmarks for Online Tests)Under 250 ms is quick and under 200 ms is genuinely fast on a browser reaction test. See the full scale, why device lag matters, and how to get a fair score.7 min read
• Why Your Browser Score Is Slower Than a Laboratory OneThe same task, measured two ways, produced a 65 ms gap in published work. That difference is larger than most effects people test for — here is where it comes from.8 min read
• Why Practice Improves Your Score, Then StopsSerial testing data shows a real 13 ms gain that almost entirely arrives in the first two sessions. What that means for discarding your first attempt.6 min read

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