⚡ Reaction Time Test
When the red screen turns green, click, tap, or press Space as fast as you can. Your score is the average of 5 tries.
How the reaction time test works
- Click the panel (or tap it, or press Space / Enter). It turns red: wait.
- At a random moment between 1.2 and 4.5 seconds, it turns green. Click as fast as you can.
- Clicking before it turns green shows "Too soon!" and that try does not count.
- After 5 valid tries you get your average in milliseconds and a rating. Your best average and best single try are saved.
What affects your reaction time score
The number on screen is your reaction time plus device lag. A 60 Hz monitor redraws about every 16.7 ms, so green can appear up to one frame late, and wireless mice, Bluetooth keyboards, and touchscreens can add anywhere from a few to tens of milliseconds of input delay. The same person can score quite differently on different devices, so compare results on the same setup.
- High refresh rate monitors (120 Hz+) and wired mice give the fastest results.
- Phones usually score tens of milliseconds slower than a desktop because of touch latency.
- Being tired, sleepy, or distracted slows you down noticeably.
Reaction time ratings
The ratings are just for fun and are not a statistical ranking.
| Average | Rating |
|---|---|
| under 180 ms | ⚡ Lightning |
| 180–219 ms | 🐆 Cheetah |
| 220–259 ms | 🏎 Fast |
| 260–309 ms | 🙂 Average |
| 310–379 ms | 🐢 Relaxed |
| 380 ms and up | 😴 Sleepy |
Simple visual reaction time for adults is commonly cited at roughly 200–300 ms, but numbers vary a lot with the measurement method and hardware. Gamers on fast monitors often land in the high 100s to low 200s.
Tips to react faster
- Rest a finger on the mouse button or key before you start so there is no travel time.
- Watch the center of the panel and stay relaxed; tensing up can make you slower.
- Do not try to guess the timing. The wait is random, and early clicks are thrown out.
- Get enough sleep. Fatigue is one of the biggest drags on reaction time.
This test is for entertainment only. It is not a medical test and does not assess health or driving ability. Your records are stored only in this browser's cookies.