Reaction Time Test
Measure your visual response speed with a local browser reaction test.
Ready
A QUICK WALKTHROUGH
How to use this tool
- Choose Start and wait for the panel to turn green.
- Click as soon as it changes.
- Review the measured response time and try again.
Local timing
The test uses a monotonic browser clock and does not send results anywhere.
False-start protection
Clicks before the signal are marked as early and do not produce a reaction score.
GOOD TO KNOW
Common questions
Can I restart?
Yes. Start another round at any time; the previous result is replaced.