Reaction Time Test
Wait for green, react quickly, and compare your results.
START HERE
Pick a mode and begin
Take one quick round or use five rounds for a clearer comparison.
You cannot change mode while a test is in progress.
5 ROUND RESULT
Your five rounds
Lower is faster.
Your stats
- Best
- --
- Average
- --
- Latest
- --
Results can vary with your screen, browser, and input device.
Recent tests
Simple test, useful results
Everything stays focused on the signal, your response, and the numbers that help you compare attempts.
One or Five Rounds
Choose a quick single result or complete five rounds to see a more balanced average.
Focused Measurement
The timer starts with the green signal and stops on your first valid response.
Use Any Device
Respond with a mouse, touch screen, Space, or Enter—whichever feels natural.
Clear Comparisons
See your latest, best, and average times, plus a compact chart after five rounds.
Recent Attempts
Keep up to 20 completed tests so you can compare recent sessions at a glance.
Stored on Your Device
Your reaction results stay in this browser using local storage. No account is required.
Frequently Asked Questions
How do I take the test?
Choose a mode and start the test. Wait while the area is orange, then respond as soon as it turns green.
What happens if I respond too soon?
The round is marked “Too soon!” and no score is recorded. You can retry the same round immediately.
Which mode should I choose?
Use 1 Round for a quick check. Choose 5 Rounds when you want an average and a better view of variation.
What is a good reaction time?
There is no single score that fits everyone. Your most useful comparison is with your own results on the same device.
Why do my results change between devices?
Screen refresh rate, browser performance, and input delay can all affect the recorded time.
Where are my results saved?
Results are saved only in this browser’s local storage. Recent Tests can be cleared from this page.