How fast are your reflexes?
Reaction time is how long it takes you to respond to something you see. This reaction time testmeasures it in milliseconds: wait for the box to turn green, then tap instantly. After five rounds you get your average and a rating compared with typical human results. It's quick, a little addictive, and a fun way to challenge friends — or to see how alert you are before an exam or a long drive.
How to play
- Tap the box to start. It turns red — wait.
- After a random delay it turns green. Tap as fast as you can.
- Your time appears. Tap again for the next round. Tapping too early restarts the round.
- After 5 rounds you'll see your average and rating.
How the score works
Reaction time = moment you tap − moment the screen turned green
The waiting time is random between 1.5 and 5 seconds so you can't anticipate it. Your average is the mean of all5 valid rounds; early taps don't count.
Example
Rounds of 241, 263, 228, 290 and 252 ms give an average of (241 + 263 + 228 + 290 + 252) ÷ 5 =255 ms — right around the human average.
Rating guide
| Average | Rating |
|---|---|
| Under 200 ms | ⚡ Lightning fast |
| 200 – 250 ms | 🚀 Faster than average |
| 250 – 300 ms | 👍 Average |
| 300 – 400 ms | 🐢 A bit slow — try again! |
| Over 400 ms | 😴 Wake up! |
Test your fingers in a different way with the typing speed test.