New personal best
You Typical
New personal best
New personal best
Results depend on your device, display refresh rate, input lag and browser. The percentile is an approximation based on typical published reaction times, not a medical measurement.
Five timed taps measure how fast you react to a color change: the wait before each one is random, between about 1.4 and 4.6 seconds, and an early tap is a false start that is repeated. You get your average, your fastest try and an approximate comparison with typical results.
How to use
- Reaction: tap the box, wait while it is gray, then tap as soon as it turns purple. Five tries give your average.
- Tapping before the color changes is a false start: that try is repeated.
- CPS: pick a duration, then click the box or press Space as fast as you can. The timer starts with your first click.
- Aim: choose 30 targets, 60 seconds or Precision and tap the targets as quickly and accurately as you can.
- Tap a result row to copy it. Your history and best scores stay in this browser.
- Typical simple reaction times to a visual signal are around 200–300 ms. The percentile assumes an average of about 270 ms and is only a rough guide.
- Displays add delay: a 60 Hz screen can add up to about 16 ms, and wireless mice or touch screens can add more. Compare results on the same device.
- The test pauses or resets when you switch tabs, so background time never counts.
- In 60 seconds mode targets shrink and disappear after about 1.7 s; in Precision the targets are small and accuracy matters most.
What is a good reaction time?
Simple reaction to a visual signal typically takes about 200 to 300 milliseconds; the percentile here assumes an average of about 270 ms. Under 200 ms is fast, and most people get a little quicker with practice, after a warm-up and when they are rested. Reaction to sound is usually somewhat faster than to light.
To keep the test fair, the color changes after a random wait of about 1.4 to 4.6 seconds, so you cannot learn the rhythm, and tapping early counts as a false start that is repeated rather than scored.
Why your device matters
Every screen and input adds delay. A 60 Hz display refreshes every 16.7 ms, so the color change can appear up to that much later; 120 Hz and 144 Hz screens cut the wait. Wireless mice, Bluetooth keyboards and touch screens can add 10 ms or more. Compare results on the same device, and use a wired mouse and a high refresh rate screen if you want your best number. Timing uses the browser's high-resolution clock and event timestamps.
Frequently asked questions
What is the average human reaction time?
For a simple visual signal, about 200 to 300 ms. Many people average around 250 to 280 ms in a test like this one.
Is 200 ms a good reaction time?
Yes, 200 ms is faster than most people manage on a typical screen. Consistent scores under 180 ms are rare.
How can I improve my reaction time?
Warm up with a few rounds, sleep well and stay focused on the box. Using a wired mouse and a high refresh rate screen also removes device delay.
Why was my try marked as a false start?
You tapped before the box turned purple. The wait is random, so that try is repeated and does not count.
Does the test keep my results?
Your history and best scores are saved in this browser only. Nothing is uploaded.