How to play
- Press Play, or hit Space. The arena dims and you wait.
- After a random pause, a green target lights up somewhere in the arena. Tap or click it as fast as you can.
- Jump the gun and tap before it appears, and that round starts again. The same happens if you take longer than two seconds.
- Five hits later you get your average in milliseconds, plus the animal that matches it. Log in if you want the score on the leaderboard.
What is a good reaction time?
Most adults land somewhere between 200 and 300 milliseconds on a test like this. Your device adds a little on top, since the screen has to draw the target and the mouse or touchscreen has to report your tap, so online scores usually cluster around 250 to 280 ms. Anything under 200 is genuinely quick. The table below shows where each score lands.
| Average | Your reflex animal |
|---|---|
| Under 180 ms | Falcon: The fastest animal on Earth, and so are you. Pro-gamer reflexes. |
| 180–214 ms | Cobra: Strike speed. Faster than almost everyone you know. |
| 215–249 ms | Fox: Quick and sharp. Comfortably above average. |
| 250–289 ms | Cat: Solid reflexes, right on the human average. |
| 290–349 ms | Dog: Good effort, slightly slow paws. |
| 350–449 ms | Panda: Chill vibes, slow taps. |
| 450 ms and over | Sloth: Were you even looking? |
How to get a better score
Sleep helps more than anything else. Being tired slows you down in ways you won't notice yourself, while a cup of coffee can sharpen you up a little. Play a couple of warm-up games too, because almost everyone's first attempt is their slowest.
Your setup matters more than you'd think. A wired mouse and a high refresh rate screen can shave real milliseconds off every round, and phones tend to be a touch slower than computers. And don't try to guess the timing. The wait is random, and anything under 100 ms counts as a false start because no human can genuinely react that fast.
Learn more
- Reaction Time by Age: What the Research Shows
When do reflexes peak, and how fast do they slow down? What large studies of thousands of people found about reaction time from childhood to old age.
- What Affects Reaction Time? 8 Factors That Matter
Sleep, caffeine, alcohol, practice, age, even your screen: the eight factors that make your reaction time faster or slower, and what you can control.
- How Online Reaction Time Tests Work
Why your score changes between devices, why anything under 100 ms counts as a false start, and how a browser measures your reaction to the millisecond.
- Reaction Time and Driving: Why 250 ms Becomes 1.5 s
A quarter-second score on a reaction test becomes a second or more behind the wheel. Where the extra time goes, and what it costs in metres at 30 mph.
- Simple vs Choice Reaction Time, and Hick's Law
Why you react faster to one light than to two, what Hick's law says each extra option costs, and why this test deliberately uses a single target.
- Do Video Games Improve Reaction Time?
Gamers often react faster, but is it the games or the people who pick them? What the largest studies found, including the ones that disagree.
- Reaction Time in Sport: Why Reflexes Aren't Enough
A fastball reaches the plate in 0.4 seconds and sprinters are disqualified for reacting in under 0.1. How top athletes cope when reflexes alone are too slow.