How the reaction test works
- Click the box to start a round. It turns red. Wait.
- After a random delay of 1.5–4.5 seconds it turns green.
- Click as fast as you can. Your time in milliseconds appears.
- After 5 rounds you get your average, your fastest round and a result you can submit.
Clicking during red counts as a false start and the round restarts. The random delay stops you from predicting when green will appear.
Reaction time benchmarks
| Average | Rating |
|---|---|
| Over 300 ms | Slow. Tired, distracted, or a laggy setup |
| 250–300 ms | Below average |
| 200–250 ms | Average |
| 180–200 ms | Fast |
| 160–180 ms | Very fast |
| Under 160 ms | Exceptional |
Times under about 100 ms aren’t humanly possible as a reaction to an unpredictable signal, so they’re rejected from the leaderboard.
What affects your reaction time
- Hardware delay: a 60 Hz monitor can add up to ~16 ms compared with 240 Hz. Wireless mice, TV “picture modes” and Bluetooth add more.
- Sleep and caffeine: lack of sleep slows reactions noticeably. Moderate caffeine can help a little.
- Age: simple reaction time tends to be fastest in the late teens and twenties and slows gradually with age.
- Practice: you’ll improve over the first few dozen tries as you learn the test, then level off.
- Attention: focus on the centre of the box and keep your finger resting on the button.
Improving your reflexes
Pure reaction time improves only a little with training, but you can reliably cut the delay your setup adds: use a wired or low-latency mouse, a high refresh rate monitor with game mode on, and close heavy background apps. For game-relevant reflexes, combine reaction and precision on the aim trainer.
Frequently asked questions
What is a good reaction time?
For a visual click test in a browser, 200–250 ms is average, 180–200 ms is fast, and under 170 ms is excellent. Your hardware adds some delay, so compare on the same setup.
Why is my reaction time slower on this site than in some apps?
Every test includes your monitor's refresh delay, your mouse's input lag and browser processing, typically 10–40 ms in total. Different tests and devices add different amounts.
What happens if I click too early?
The round is cancelled and you redo it. Early clicks never count, so guessing won't help.
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