Reaction Time Test
Wait for the screen to turn green, then click as fast as you can. How quick are your reflexes — in milliseconds?
Tap the box or press Space to react
What is a good reaction time?
The average human reaction time to a visual stimulus is around 250–300 milliseconds. Top athletes often react in 150–200ms. A typical online reaction test measures the time between a signal (the green flash) and your click — the lower the score, the faster your reflexes.
How to get a faster reaction time
- Keep your eyes on the box and your finger or mouse ready — don't predict, react.
- Stay relaxed. Tension slows your reflexes.
- Get enough sleep; tiredness noticeably slows response time.
- Practice the 10s and 30s Rush modes to build hand-eye speed.
Game modes
5 Trials measures your average over five attempts — the most reliable score. 10s Rush and 30s Rush challenge you to click as many times as possible before time runs out. Your personal bests are saved automatically in your browser, no account needed.
Frequently asked questions
Is the reaction time test accurate?
The timer uses your browser's high-resolution performance clock, accurate to sub-millisecond. For fair results, use a consistent device and avoid background distractions.
Does it work on mobile?
Yes — the game is fully touch-friendly and works great on phones and tablets. Just tap the box when it turns green.
Do I need an account or a backend?
No. Everything runs entirely in your browser. Your personal records are stored locally, and you can share your score with a single tap.