What Is a Good Reaction Time?
You finish a round on the reaction time test, get a number in milliseconds, and want to know one thing: is that good? The short answer is that a good simple visual reaction time for an adult is anything under about 250ms, and under 200ms is genuinely fast. But the honest answer depends on your age, which test you took, and the device you took it on. Here is how to read your score properly.
The quick rating scale
For a simple visual reaction test (react to one signal, as fast as you can), this is roughly how adult scores break down:
| Range | What it means |
|---|---|
| Under 150ms | Elite. Rare even among elite athletes |
| 150-200ms | Fast |
| 200-250ms | Above average |
| 250-300ms | Average |
| Over 300ms | Slower than typical. Check sleep, distraction, and device lag first |
The number people usually quote for "average" is 250ms, and one of the largest public data sets, Human Benchmark, reports a median around 273ms. Both are consistent with the lab figure of 200-250ms once you account for the extra delay a browser adds. So if your score lands in the 250-300ms band, you are squarely normal, not slow.
Is my score good? 150, 200, 250 and 300ms
Each answer below uses the simple visual scale above.
Is 150ms a good reaction time?
Yes, 150ms is very fast. It sits on the line between fast and elite on the scale above, a level that is rare even among elite athletes. If you hit it once, enjoy it. If you hit it on most tries, check that you aren't guessing the timing, because anticipation can fake a fast score.
Is 200ms a good reaction time?
Yes. 200ms is the top of the fast band and beats the adult average of 200-250ms. Scores just above it, like 210ms or 213ms, still count as above average. For anyone who isn't a trained athlete or competitive gamer, a repeatable 200ms is a strong result.
Is 250ms a good reaction time?
250ms is a normal, average score. It's the figure people quote most often as the average, and it sits on the line between above average and average on the scale. On an online test, where your device adds lag, 250ms is a perfectly decent result.
Is 300ms a good reaction time?
300ms is around average for an online test, though it sits at the slow edge of that band. It's nothing to worry about. If you want a lower number, check the basics first: sleep, distractions, and how much lag your device adds. Those move your score more than raw reflexes do for most people.
For gaming, input lag and game sense change what counts as good, so the good reaction time for gaming guide gives gaming-specific ranges.
"Good" depends on your age
Reaction time peaks in your early-to-mid twenties and then slows by about half a millisecond a year. So a 240ms score means something different at 19 than it does at 60. A fair way to judge yourself is against your own age group, not against a college athlete. A 250ms result is a solid score for someone in their fifties and an unremarkable one for a teenager. We break the numbers down decade by decade on the average reaction time page, with a deeper look at the childhood-to-old-age curve on the reaction time by age page.
"Good" depends on which test you took
A good score on one test is a mediocre score on another, because different tests measure different things. Comparing a choice reaction result against a "200ms is average" headline is comparing the wrong numbers.
| Test | Typical adult average | A good score is around |
|---|---|---|
| Simple | 200-250ms | Under 220ms |
| Choice | 300-350ms | Under 320ms |
| Go / no-go | 280-320ms | Under 300ms with few mistakes |
Choice reaction time is slower because you have to decide, not just react, and that decision adds roughly 100ms. On a go/no-go test, speed alone is not the point: reacting fast but hitting the no-go signals is a worse result than a slightly slower score with clean accuracy.
How the pros compare
It helps to know what the ceiling looks like, as long as you do not use it to judge yourself. Formula 1 drivers launch their cars about 200ms after the lights go out. In one lab study, professional Counter-Strike players averaged 219ms on a simple click test, and Olympic sprinters at the 2008 Beijing Games averaged 166ms (men) and 189ms (women) off the gun. These are people who have trained this exact skill for thousands of hours under ideal conditions, and even they rarely break 150ms honestly. For the full list, and why 100ms is a hard floor, see the fastest reaction times ever recorded. If you want gaming-specific targets, the reaction time for gaming guide covers what actually matters in-game.
Why your online score runs a little high
If your number is higher than the lab figures, that is expected, not a sign you are slow. A browser has to pass the signal through your monitor, your input device, and its own rendering before you ever see it, and each step adds a few milliseconds. Online scores commonly run 20-60ms slower than an equivalent lab measurement. The fix is not to chase an absolute number but to test under the same conditions each time and watch your own trend. If you want to actually lower the number, the how to improve reaction time guide covers what works and how much to realistically expect.
Frequently asked questions
What is a fast reaction time?
For a simple visual test, anything from about 150 to 200ms is fast, and under 150ms is elite territory rarely seen outside trained athletes and gamers. Below 100ms is not a real reaction at all: the nervous system cannot see a signal and respond that quickly, so a sub-100ms score is a lucky guess, not speed.
What is the average reaction time?
About 200-250ms for a simple visual stimulus in a healthy adult, based on over a century of research. Online tests often read a bit higher, commonly 250-300ms, because your monitor, input device, and browser each add a few milliseconds a lab setup would not.
Test where you stand