Reaction Time Test
Measure your reaction speed in milliseconds. Wait for green, click as fast as you can. 5 attempts, averaged for accuracy.
Session History
| # | Average | Best | Worst | Rating | Date |
|---|
Reaction Time Benchmarks
Where does your reaction time rank? Here's how different groups typically perform on visual reaction time tests.
| Category | Reaction Time | Description |
|---|---|---|
| Elite / Pro Gamer | < 150ms | Top-tier competitive players, trained athletes. Exceptional reflexes honed through thousands of hours of practice. |
| Fast | 150 – 200ms | Experienced gamers, young adults in peak condition. Noticeably faster than the general population. |
| Average | 200 – 250ms | Most healthy adults aged 18-40. This is the normal range for untrained individuals. |
| Below Average | 250 – 350ms | Common for older adults, fatigue, or first-time testers who haven't warmed up. |
| Slow | > 350ms | Significant fatigue, distraction, or age-related decline. Can improve with practice and rest. |
Tips to Improve Your Reaction Time
- Get enough sleep. Sleep deprivation is the #1 reaction time killer. Even one night of poor sleep can add 30-50ms to your reaction time. Aim for 7-9 hours consistently.
- Warm up first. Your first few attempts are always slower. Do 2-3 practice rounds before measuring your true baseline. Cold muscles and an unfocused mind add latency.
- Use caffeine strategically. 100-200mg of caffeine (1-2 cups of coffee) can improve reaction time by 10-20ms. But too much causes jitteriness that hurts accuracy.
- Practice regularly. Like any skill, reaction time improves with consistent training. Even 5 minutes per day of reaction time practice can yield measurable improvement within 2 weeks.
- Reduce input lag. Use a wired mouse (not Bluetooth), enable hardware acceleration in your browser, and if possible, use a high-refresh-rate monitor (144Hz+).
- Stay physically active. Regular cardio exercise improves blood flow to the brain and has been shown to improve cognitive processing speed, including reaction time.
- Focus on the stimulus, not the click. Anticipating the green screen causes early clicks. Instead, relax your hand and let the green color trigger your click naturally.
Frequently Asked Questions
What is a good reaction time?
The average human visual reaction time is about 250ms. Anything under 200ms is considered fast, and under 150ms is exceptional — typically only seen in competitive gamers and trained athletes. Most people fall between 200-300ms. Age, sleep, caffeine, and practice all affect your results. Don't worry if your first few attempts are slow — reaction time improves significantly with practice and warming up.
How accurate is this reaction time test?
This test measures the time between the screen turning green and your mouse click, using the browser's high-resolution performance.now() timer (accurate to fractions of a millisecond). Your actual result includes input lag from your monitor (typically 5-15ms), mouse (1-8ms depending on polling rate), and browser rendering. For consistent comparisons, always test on the same setup. The 5-attempt average smooths out outliers for a more reliable score.
Why is my reaction time different on different devices?
Display latency is the biggest factor. A 60Hz monitor adds ~16ms of frame delay compared to ~4ms on a 240Hz display. Wireless mice add 1-4ms versus wired. Bluetooth can add 10-30ms. Even your browser matters — Chrome and Edge tend to have slightly lower input lag than Firefox. For the most accurate measurement, use a wired mouse on a high-refresh-rate monitor with hardware acceleration enabled in your browser.
Can I improve my reaction time?
Yes, but within biological limits. Most people can improve by 20-40ms through regular practice. Sleep is the single biggest factor — reaction time degrades by 20-30% when sleep-deprived. Caffeine can improve reaction time by 10-20ms for most people. Regular cardiovascular exercise has been shown to improve reaction time long-term. Playing fast-paced video games also trains your visual processing speed. However, your baseline is partly genetic — some people are naturally faster reactors.
What's the fastest human reaction time ever recorded?
In controlled laboratory settings, the fastest simple visual reaction times are around 120ms. In sprinting, the IAAF considers any reaction time under 100ms to be a false start, as it's believed to be physiologically impossible to genuinely react that fast to a gunshot. In gaming, some professional players have recorded consistent averages around 140-150ms on click-based tests, though in-game reaction times are slower due to decision-making overhead.
Does age affect reaction time?
Yes. Reaction time peaks in your mid-20s and gradually slows after that. A typical 20-year-old averages around 230ms, while a 60-year-old averages around 330ms. However, this is a general trend — an active, well-rested 50-year-old can outperform a sleep-deprived 20-year-old. Regular practice, exercise, and good sleep habits can offset much of the age-related decline. Professional athletes in their 30s often maintain excellent reaction times through training.
What's the difference between reaction time and reflex?
A reflex is an involuntary, automatic response (like pulling your hand from a hot stove) that bypasses the brain via the spinal cord — these are around 50-80ms. Reaction time is a voluntary, conscious response to a stimulus (like clicking when the screen turns green) that requires brain processing — typically 150-300ms. This test measures voluntary reaction time. Reflexes can't really be trained, but voluntary reaction time can be improved with practice.