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Free Reaction Time Test Online — Test Your Reflexes
Click to Start
When the screen turns green, click as fast as you can!
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Frequently asked questions
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- What is a good reaction time?
- The average human reaction time is around 200-250ms for visual stimuli. Under 200ms is considered fast, and professional gamers or F1 drivers can achieve 150-180ms consistently.
- How does a reaction time test work?
- The test measures the time between a visual stimulus (the screen turning green) and your click response. The time is measured in milliseconds using high-precision browser APIs.
- Can I improve my reaction time?
- Yes! Regular practice, adequate sleep, proper hydration, and reduced screen fatigue can help. Athletes and gamers train their reaction time regularly.
- What is the fastest human reaction time ever recorded?
- The fastest verified human reaction times are around 100-120ms. In sprinting, anything under 100ms at the start is considered a false start.
- Does age affect reaction time?
- Yes, reaction time generally peaks in your mid-20s and gradually slows with age. However, regular practice can help maintain fast reaction times.
How to Test Your Reaction Time
Our free reaction time test measures how quickly you respond to a visual stimulus. When you click to start, the screen turns red — wait patiently until it turns green, then click as fast as you can. Your reaction time is measured in milliseconds using the browser's high-precision performance.now() API, giving you accurate results down to a fraction of a millisecond.
Reaction Time Benchmarks
The average human reaction time for visual stimuli is around 250 milliseconds. Professional esports players typically achieve 150-180ms, while Formula 1 drivers average around 200ms under race conditions. Sprinters at the Olympics must not react faster than 100ms — anything below that threshold is ruled a false start. With regular practice, most people can improve their reaction time by 10-20%.