About Reaction Time Test
Reaction Time Test is a free online tool that measures how quickly you respond to a visual signal. It runs right in your browser, so there's nothing to install and no account to create.
How the test works
- Press Start test or click the test area, then wait.
- After a random delay of 0.8 to 3 seconds, the area turns green. Click, tap, or press Space or Enter as fast as you can.
- If you click before it turns green, the attempt doesn't count and you can try again.
- Each series has five attempts. You'll see your current, average, and best times, along with a rating for each attempt.
What is a good reaction time?
Reaction time is the delay between seeing a signal and responding to it. Most adults react to a visual signal in roughly 200 to 300 milliseconds. On this site, a time of 190 ms or less is rated good or better, and 221 to 260 ms is rated average.
Your result depends on your device as well as your reflexes, so treat the rating as a rough guide rather than an exact measurement.
Tips for more accurate results
- Use the same device and browser each time so your results are comparable.
- A wired mouse or keyboard can add less delay than some wireless devices or touchscreens.
- Close other tabs and apps that might slow down your computer.
- Stay focused on the test area and complete a few series. An average over several attempts means more than a single fast click.
Available in 14 languages
The test is available in English, Chinese, Hindi, Spanish, Arabic, Bengali, French, Portuguese, Indonesian, German, Japanese, Ukrainian, Russian, and Urdu. Use the language links at the bottom of the test page to switch languages. Our average reaction time guide is available in all 14 languages too.
Your results stay private
Your times are calculated in your browser and cleared when you reset the test or leave the page. After 5 attempts, you can choose Add my result to add your average to the anonymous results chart in our average reaction time guide. Only that one number is saved, with no personal data. For details, see our Privacy Statement.
Contact
Have a question or feedback, or found a bug? Email us at contact@testreaction.com or visit our Contact Us page.