How this reaction time test works
Click the box to start. It stays red for a random delay, then turns green. The moment it turns green, click it, press Space, or tap on a touchscreen. The page shows your reaction time in milliseconds. You get five attempts, and at the end you see your average and your best time.
If you click before the green appears, the attempt is marked too soon and does not count, so guessing does not help. The test runs entirely in your browser and nothing is uploaded.
How to read the results
- Typical visual reaction time for healthy adults is around 200 to 270 ms. Under 200 ms is quick. Over 300 ms is slower than average, but one bad attempt does not mean much.
- Average vs best. The best attempt shows your ceiling, and the average shows how consistent you are. Judge yourself by the average of several rounds.
- Your hardware is in the result. The number includes more than your nerves. A 60 Hz display can add up to about 17 ms before the green is even drawn, a monitor with slow processing adds more, and wireless mice and touchscreens add their own delay. Two people with the same reflexes can score differently on different devices.
- What changes your score. Age, sleep, caffeine, stress, distraction and practice all matter. Lack of sleep is one of the biggest factors.
Scores slow or inconsistent? Try these fixes
- Use a mouse or the spacebar. Phone taps and trackpads are usually slower than a wired mouse button or a keyboard key.
- Check your refresh rate. A 144 Hz or faster display shows the green sooner. Use the refresh rate test to confirm your screen is not stuck at 60 Hz.
- Turn on game mode. On a TV or monitor, switch to Game mode in its menu to cut image processing delay.
- Close heavy tabs and apps. A busy computer can delay the browser. Plug in a laptop and set Best performance in the power settings.
- Use a wired connection. Bluetooth mice and keyboards can add a few milliseconds.
- Sit upright, rest your finger on the button and stay focused. Do the test at a time when you are rested.
Why test your reaction time
It is a quick way to compare yourself over time, check how tiredness or caffeine affects you, or see whether a new monitor or mouse feels faster. Gamers use it as a rough benchmark. It is not a medical test. If you honestly want to improve, sleep well, practice in short sessions, reduce screen latency and take the average of many attempts. Reflexes themselves change only slightly, but anticipation and setup can improve the number.
Frequently asked questions
What is a good reaction time?
For a visual test, about 200 to 270 ms is typical. Below 200 ms is fast, and trained gamers sometimes reach 150 to 180 ms on a good setup.
What is the average human reaction time?
Around 250 ms for a visual stimulus such as a color change. Reactions to sound are slightly faster, and touch is similar.
Why is my reaction time slower on my phone?
Touchscreens add input latency, and most phone displays run at 60 Hz. The same reflexes can score 20 to 50 ms slower than with a mouse.
Does a higher refresh rate improve my score?
Slightly. A 144 Hz screen shows the green color earlier than a 60 Hz one, which can save around 10 ms.
What does too soon mean?
You clicked before the screen turned green. The attempt is discarded so you cannot score well by guessing.
Can I improve my reaction time?
A little. Sleep well, avoid distractions, use a wired mouse and a fast display, and practice. Large gains are unusual.
What is the difference between visual, sound and touch reaction time?
Reaction to sound is usually a little faster than to sight, and touch is often in between, though differences are small. This test measures the visual reaction, and results also depend on your screen and input device.
How fast are professional gamers?
Professional gamers often score around 150 to 200 milliseconds on simple visual tests, compared with roughly 250 for the average person. Training, screen speed and practice all influence the result.