How fast are your reflexes?
Click when red turns green. Five attempts, your median and best scores, and a percentile ranking against other players — free, no sign-up.
Press start. The panel turns red — wait, and don't click yet.
After a random delay (2–5 seconds), the panel turns green.
Click, tap, or press Space the instant you see green.
Clicking early is a false start: that attempt doesn't count, so wait for green.
Complete five attempts to get your median score, best click, and percentile.
This reaction time test measures how quickly you respond to a visual signal. Press start, wait for the red panel to turn green, and click the moment it changes. The delay before each change is random, so you can't anticipate it — you have to actually react.
You get five attempts per run, and your score is the median of the five, shown alongside your single best click. The median matters: anyone can get one lucky 180 ms click, but the median is a stable measure of your real speed. Most people land between 200 and 300 milliseconds; anything under 200 ms is genuinely fast.
Your times are affected by more than your nervous system. Monitor refresh rate, input lag, and whether you're on a phone or a laptop trackpad all shift results by tens of milliseconds — which is why we track mobile and desktop personal bests separately, and why comparing runs on the same device tells you the most.
When you're done here, try the other benchmarks: the choice reaction test adds a decision to every click, the audio reaction test swaps your eyes for your ears, the aim trainer measures speed and precision together, and the daily challenge gives everyone the same seeded gauntlet once a day. See how your median stacks up against average reaction time by age and device, or browse all six tests.
Five-attempt scoring
Median and best of five attempts — one lucky click never inflates your score.
Six benchmark tests
Reaction, choice, audio, aim, sequence memory, and clicks per second.
A daily challenge
One seeded gauntlet per day — the same for everyone, with streaks and a permanent archive.
Percentiles and history
See how you compare, and track your personal bests per device over time.