Reaction time test
Wait for the pad to turn green, then click or tap. Each round shows the milliseconds, and five rounds show the average and your best.
- Five timed rounds
- Free, no sign-up
Click or tap when the pad turns green. Five rounds show each time in milliseconds, then the average and your best.
Runs in your browser. Nothing you type or open is uploaded. Free to use, no account. More device tests
How to use it
- Click or tap the pad, or press Space.
- Wait for the green Now, then click or tap as soon as you see it.
- Finish five rounds and read the average, the best and the last time.
How a round is timed
The pad waits a short, random stretch, then turns green. The clock starts at that moment and stops on the next click, tap or key. The wait is between 800 and 3500 milliseconds, so a click on a fixed rhythm lands early and that round is set aside. Press the pad to try the same round again.
Five finished rounds show the last time, the average and the best. A fresh click after the fifth round clears the list and starts again. Space and Enter work the same as a click when the pad is focused. A held key repeats and is ignored, so one press is one answer.
Private by design
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Everything runs in this page and stays on your device. The times stay on this page.
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Questions
How is the reaction time measured?
The clock starts when the pad turns green and stops when you click, tap, or press Space or Enter. The result is in milliseconds.
What happens if I click too soon?
That round is set aside. The pad says so, and the next click starts the wait again.
Why are there five rounds?
One round can be a lucky beat. Five rounds show the last time, the average and the best.
Can I use the keyboard?
Yes. Focus the pad and press Space or Enter. A key you hold down counts once.