Reaction Time Test
Test your reflexes: click as soon as the screen turns green and see your reaction time in milliseconds. Free.
✓ 100% free ✓ No sign up ✓ Runs in your browser — nothing uploaded
How to use Reaction Time Test
- 1Open Reaction Time Test — it works right on this page.
- 2Use the controls above.
- 3Copy or download the result. No sign up needed.
Questions
Is Reaction Time Test free?
Yes. Reaction Time Test is 100% free with no limits, no watermark, no sign up and no email required.
Is my data sent anywhere?
No. Everything is calculated locally in your browser. Nothing you type is sent to or stored on any server.
Does Reaction Time Test work on my phone?
Yes. Reaction Time Test works in any modern browser on iPhone, Android, Windows, Mac, Linux and Chromebook. No app or install needed.
Do I need to create an account?
Never. There is no sign up, no login, no email and no paywall. Just open the page and use it.