What is a good reaction time?

The quick answer

For a simple visual reaction test — you see a light or colour change and tap as fast as you can — most adults land between 200 and 300 milliseconds, with around 250ms being typical. Anything consistently under 200ms is genuinely fast. Elite gamers, sprinters reacting to a starting gun, and fighter pilots often live in the 180–220ms range.

Why the type of test matters

"Reaction time" isn't one number. Psychologists separate it into types, and they produce very different results:

• Simple reaction time — one signal, one response ("tap when it turns green"). This is the fastest, ~250ms. It's what our Pulse game measures.
• Choice reaction time — multiple signals, each needing a different response. Slower, because your brain has to decide. Often 350–500ms.
• Recognition reaction time — respond to some signals but not others. Slower still.

When you compare scores across websites, make sure you're comparing the same type of test. A "slow" 400ms on a choice test might be perfectly normal.

What slows your reaction time down

Before you judge your score, know what's moving it around:

• Sleep. Fatigue is one of the biggest factors — a tired brain reacts measurably slower.
• Age. Reaction time peaks in the early-to-mid twenties and gradually lengthens after that. This is normal and gradual.
• Caffeine. A moderate dose genuinely shaves a few milliseconds off for most people.
• Your hardware. This is the sneaky one. A high-latency monitor, a wireless mouse, or a busy browser tab can add 20–50ms that has nothing to do with your brain. For a fair personal comparison, always test on the same setup.

How to test your reaction time

You can measure it right now, free, with no sign-up. Our Pulse test runs five rounds and averages them (discarding any false starts), which gives a far more stable number than a single tap. For your most representative score: sit comfortably, use a wired mouse or tap directly on a touchscreen, close other heavy tabs, and do a couple of practice runs first.

Can you actually improve it?

A little, and honestly. Practice on a specific reaction task will lower your score on that task — partly real improvement, partly learning the rhythm of the test. Good sleep and being properly warmed up matter more than any "training." What you can't do is dramatically rewire your baseline; reaction time is fairly stable. For the full picture, see what reaction-time training actually improves. We'll never tell you otherwise.