Reaction Test

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Click to start

Average human visual reaction: ~250 ms · Pro gamers: ~150–180 ms

How to play Reaction Test

How it works

Click the big pad to start. It turns red — wait for it — and flips green at a random moment between 1 and 3.5 seconds. The instant it's green, click. Your time is measured in milliseconds, and your best is saved in your browser.

Reading your score

Under 200 ms: exceptional — pro-esports territory.
200–250 ms: better than average; sharp day.
250–320 ms: the broad human average for visual reactions.
320 ms+: normal for a cold start, late hours, or a trackpad — try a mouse and a second attempt.

Factors that move the number

Reaction time improves with a mouse (vs trackpad), worsens with age gradually after the mid-20s, degrades measurably when tired, and benefits enormously from the second and third attempts as your brain stops "deciding" and starts anticipating the pattern. The test measures simple visual reaction — the fastest reflex pathway humans have.

Frequently asked questions

Why the random delay?

A fixed wait would let you anticipate instead of react — the random 1–3.5 second window forces a genuine reflex response. Jumping early scores "Too soon" and costs you the attempt.

Is my score good?

Anything under 250 ms is above the human average for visual reactions. Track your best over a week of normal conditions — that personal baseline is the meaningful number.

Does mouse vs touch matter?

Yes — a mouse click registers measurably faster than most touchscreens, which add digitizer latency. Compare like with like.