Free Reaction Time Test Online
A reaction time test measures the delay between a visual signal and your response in milliseconds. Complete five randomized rounds to compare your average, fastest attempt, and saved personal best.
A quick reflex challenge for game night
Compare results on the same device, challenge friends between rounds, or use the test as a fast warm-up before reaction-heavy tabletop and video games.
Find board games with GameShelfVisual reaction test
Complete five valid rounds. Early presses do not count.
Use the same device for comparisons. Display, browser, input method, sleep, and focus can all affect results.
Frequently asked questions
What is a reaction time test?
A reaction time test measures how many milliseconds pass between a visual signal and your click, tap, or key press.
What is a good reaction time?
Many casual visual reaction tests land around 200 to 300 milliseconds, but results vary by device, display, input method, sleep, and focus.
Why does the test use five rounds?
Five rounds reduce the impact of one lucky or distracted attempt and produce a more useful average, best time, and consistency range.
Why did I get a false start?
A false start means you pressed before the panel turned green. The attempt is discarded so anticipation does not lower your measured time.
Is this reaction time test free?
Yes. The test is free, runs entirely in your browser, and requires no account, installation, or data upload.