Reaction time test
Wait for the circle to fill, then tap as fast as you can. See how quickly you react, in milliseconds.
- 1Watch the empty ring. The wait changes every round, so there’s nothing to time.
- 2The moment it fills, tap, click or press Space as fast as you can.
- 3Five rounds make your average. A press that comes too soon just restarts the round.
5 rounds · nothing is saved
How scoring works
- Your score is your average reaction time over five rounds, in milliseconds. Lower is faster.
- Each round is timed from the moment the filled circle reaches your screen to the moment you press.
- A press within 100 ms of the signal is faster than anyone can react, so it counts as too soon. No press within 2 seconds counts as missed. Either way, the round starts over.
- Your fastest and slowest rounds and how much they varied sit alongside the average, so one lucky tap doesn’t tell the whole story.
A little perspective
Your screen, mouse or touchscreen and browser add delay of their own, often tens of milliseconds, so compare scores only on the same device.
Results describe your performance on this task, with no invented percentiles or IQ equivalents.
How to improve your reaction time
Part of your reaction time is simply how you’re built, but a surprising share depends on the day and on your setup. These are the changes with the best support behind them.
Get enough sleep
Tiredness is the most reliable way to slow down. Even one short night lengthens reactions and adds lapses: moments where the signal seems to slip past you entirely.
Warm up first
First tries are usually the slowest. A few practice rounds settle you into the rhythm of the task, which is why scores often improve within a single visit.
Stay ready, not tense
Keep your eyes on the circle and a finger resting on the button or key. Being set to respond helps; gripping hard or guessing the moment doesn’t, since early presses restart the round.
Check your setup
A wired mouse or keyboard and a fast screen trim delay that has nothing to do with you. Touchscreens and wireless devices often add some, which is why scores only compare fairly on one device.
Practising this test mostly makes you better at this test. Treat an improvement as a sign you’re rested and focused, not as proof of faster reflexes everywhere.
How this online reaction time test measures a response
Wait for the empty ring to become a filled circle, then respond by tapping, clicking, or pressing Space. The waiting interval changes each round. Five completed rounds make your average reaction time, reported in milliseconds; a lower number means a faster recorded response.
The number includes delay from your browser, display, and input device. It is a measurement of your response on this setup, not a laboratory measurement of reflexes alone. For a useful personal comparison, use the same device and input method across runs.
Getting started
- Choose a comfortable input method and keep it consistent between runs.
- Wait for the visible signal. Early presses restart the round rather than improve your average.
- Look at the full set of rounds as well as the average. One unusually fast or slow response does not describe the whole run.
Read how Logitally tests and scores work for more about interpreting results.
Common questions
What is a good reaction time score?
This site does not assign population percentiles or a universal passing score. Compare your average across runs on the same device, with the same input method, and use the fastest, slowest, and variation figures to see how consistent the run was.
Why did my tap count as too soon?
A press before the signal, or within 100 milliseconds after it, is treated as an early response by this game. That threshold is a scoring rule, and the round restarts without adding the response to your average.
Can I compare a phone score with a computer score?
The results are not directly comparable. A touchscreen, mouse, keyboard, display, and browser can each add different amounts of delay. Use the same setup when tracking your own results.