Average Reaction Time: What Is a Good Reaction Time?

Reaction time is the delay between seeing a signal and responding to it. It matters in sport, driving and gaming, and it is fun to measure. This guide explains the average reaction time for most people, how human reaction time changes, and what counts as a good result.

What the average looks like

On online tests that ask people to click when a box changes colour, most results fall between 200 and 300 milliseconds, with many people scoring around 250 ms. That figure includes the time for the eyes to notice the change, for the brain to decide and for the hand to press the button.

Part of every result also comes from the equipment. The screen, mouse and browser each add a small delay, which can come to tens of milliseconds. That is why scores are only truly comparable on the same device.

What is a good reaction time?

For a simple visual test, a five-round average under about 220 ms counts as a good result, and anything under 180 ms is exceptional. The ratings below match those on the free reaction time test:

What affects human reaction time

• Age: reactions tend to be quickest in the late teens and twenties and slow gradually after that.
• Sleep and tiredness: a short night can add a noticeable delay.
• Focus: distractions and multitasking slow responses.
• The type of signal: people usually react a little faster to sounds than to things they see.
• Practice: regular practice makes results faster and more consistent.
• Equipment: monitor refresh rate, mouse type and computer speed all add or remove milliseconds.

Reaction times in games and sport

In fast games, a few milliseconds can decide a duel, which is why competitive players use high refresh-rate monitors and wired mice. In sport, reaction time works alongside anticipation: experienced players read the game early, so they need less raw speed to respond in time.

How to measure it fairly

1. Use the same device and the same time of day for each test.
2. Do a couple of warm-up rounds first.
3. Record the five-round average rather than a single best click.
4. Wait for the colour change instead of guessing, which avoids false starts.

How to get faster

Better sleep, focus, warm-ups and lower input lag all help, and regular varied practice builds lasting gains. The guide on improving reaction time covers nine practical tips and a simple training routine.