What Is a Good Reaction Time?

For a simple visual reaction — click the moment the screen changes color — most people land between 200 and 250 milliseconds, with the average often quoted near 250ms. Reactions to sound are faster, around 140–160ms, and touch is faster still, because those signals reach the brain by a shorter path than vision. Trained e-sports players push visual reactions toward 150–180ms, but sub-150ms honest simple-reaction times are rare.

Two things inflate the number in a browser test. First, variability: a single click is noisy, so a five-trial average is far more meaningful than one lucky attempt. Second, anticipation isn't reaction — if you can predict when the change is coming, you're timing, not reacting, and some tests randomize the delay specifically to prevent that. A 'good' score is really a consistent one, not a single fast outlier.

Biology sets most of it. Reaction time is fastest in your late teens and twenties and slows gradually with age; it's worse when you're tired, and sleep deprivation hits it hard — a poor night can add tens of milliseconds and, worse, make you inconsistent. Moderate caffeine gives a small, real boost; alcohol degrades it markedly. Expecting the stimulus (a valid warning cue) speeds you up, while a surprising or ambiguous one slows you down.

Context matters too. Simple reaction (one signal, one response) is fastest; choice reaction (which of several things happened, and which button answers) is slower because your brain has to decide, often 100ms or more on top. That's why real-game reactions are slower than a clean lab test — you're not just reacting, you're recognizing and choosing.

Part of your measured time isn't you — it's the equipment. A 60Hz monitor holds each frame ~16.7ms and adds ~8ms of average display latency before you even see the change; higher refresh rates cut that. Input adds more: a wireless mouse, USB polling interval, and OS processing can stack up another 10–20ms. On slow hardware, tens of milliseconds of your 'reaction' happened in silicon, not your nervous system, which is why the same person scores better on a faster setup.

Can you train the underlying speed? Only a little. Practice mostly reduces variance and sharpens the recognize-and-choose step, so game-specific reactions improve more than raw simple-reaction time, which is largely fixed by physiology. The biggest, most reliable gains are unglamorous: sleep well, warm up, remove hardware latency, and stop anticipating. Those move your score more than any reaction 'trainer.'