Reaction Time Test
Measure your reaction time in milliseconds.
How to use
- 1Click the box (or press Space) to start.
- 2Wait while it's red; don't click too early.
- 3Click as fast as you can the moment it turns green.
- 4After 5 rounds, see your average reaction time.
Frequently asked questions
What is a good reaction time?
The average is around 250 milliseconds. Under 200 ms is fast; gamers and athletes often reach 150–180 ms.
Why is my time slower on some devices?
Screens, mice and touchscreens add a little delay. Wired mice and high refresh-rate screens give the fastest results.
Why 5 rounds?
One try can be lucky or unlucky. The average of 5 gives a fairer picture of your real speed.
How can I improve my reaction time?
Sleep well, stay hydrated, and practise. Reaction games, sports and staying alert all help a little.
Where is my best score saved?
Only in your browser on this device. Nothing is sent to our servers.
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