Ready
Tap or press Space the instant you hear the beep — measures your reaction time.
Session length
30s
SPACE start / pause · R reset
Reflex trainer
Reaction Time Test & Reflex Trainer
Measure your reaction time free online. Tap the target the instant it appears and 1SecondLap times your reflexes to the millisecond, then averages your attempts so you can track your progress. The target jumps to a random spot every round, so you are training aim and speed at once. Switch to Practice mode for hands-free random cues that sharpen reflexes for boxing, martial arts, and team sports.
Getting started
How to test your reaction time
- Press Start and wait — don't tap early, or it counts as a false start.
- The moment the target appears, tap it as fast as you can.
- Repeat for the session length; your average, best, and worst times are shown at the end.
Questions
Frequently asked questions
- What is a good reaction time?
- The average human visual reaction time is about 200–250 milliseconds. Under 200 ms is fast, and trained athletes, drivers, and gamers often reach 150–180 ms.
- How does the reaction time test work?
- Start the test and wait. When the target appears at a random spot on the screen, tap it as fast as you can. 1SecondLap measures the milliseconds between the cue and your tap and averages your attempts so you can track your reflexes over time.
- How can I improve my reaction time?
- Practise regularly, stay rested, and warm up before testing. Use Practice mode for hands-free random cues that train reflexes for boxing, martial arts, and team sports.
- Is the reaction time test free?
- Yes. It is completely free with no ads, no signup, and no download — it runs in your browser and works offline once loaded.
- Does the reaction test work on mobile?
- Yes. Tap the moving target on a phone or tablet, or press the Space bar on a desktop keyboard.