Reaction Time Test
How fast are your reflexes? Wait for the box to turn green, then click as fast as you can. This reaction time test measures in milliseconds, runs five tries and shows your average and your personal best.
- Milliseconds
- 5 tries and average
- Personal best saved
- No sign-up
How to use
- Click the box to begin. It turns red.
- Wait. After a random pause of one to four seconds it turns green.
- Click as soon as you see green. Clicking early counts as a false start.
- Do five tries to get your average. Your best time is saved in your browser.
What is a normal reaction time?
For a visual stimulus, the average human reaction time is about 250 milliseconds (a quarter of a second). Fit young adults often score between 190 and 250 ms, and top gamers can reach 150 to 180 ms. Anything under 100 ms is not a real reaction and usually means a lucky guess or a false start. Your result also includes the delay of your screen and mouse, so it will differ a little between devices.
How to improve
Reaction time is better when you are rested, focused and warmed up. Sleep, caffeine in moderation, a fast monitor and a wired mouse can each shave off a few milliseconds. Test your hand speed too with the click speed test.
Frequently asked questions
What is a good reaction time?
Around 250 ms is average. Under 200 ms is very good, and under 170 ms is excellent for a visual test on a computer.
Why does the box wait a random time?
A random delay stops you from guessing the moment. If it always changed after the same time you would measure your timing, not your reaction.
What counts as a false start?
Clicking while the box is still red. The try is not counted and you can click to start it again.
Does my device affect the result?
Yes. Screen refresh rate, display lag and input lag add a little. Compare results on the same device to see real progress.