Reaction Time Test

Click the pad (or press Space) to start, wait for it to turn green, then click as fast as you can. Five attempts - clicking too early is a false start and the attempt doesn't count.

Attempt

0 / 5

Last

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Best

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Average

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Attempts

Test complete?

How this test works

What we measure

Simple visual reaction time: the pad turns green after a random delay of 1.5-5 seconds, and we record the milliseconds between the green appearing and your click. The clock uses performance.now(), accurate to well under a millisecond.

False starts

Clicking while the pad is still red means you anticipated the green instead of reacting to it. That attempt doesn't count - just click again and keep waiting.

Your score

You get five attempts. We show every attempt plus your best, worst, and average, and rate the average against human benchmarks. Use a mouse or tap directly - trackpads and old screens can add 20-50 ms of hardware delay.

How you compare

The median human reaction time on browser-based tests is around 273 milliseconds. Higher refresh-rate monitors and wired mice measure faster; touchscreens and TVs measure slower.

Average	Rating	What it means
under 150 ms	Inhuman	Faster than human nerves fire - probably a lucky guess or a glitch
150-200 ms	Elite	Pro esports players and sprint starters live here
200-250 ms	Very fast	Well above the human median
250-300 ms	Above average	Quicker than most people
300-400 ms	Average	Normal range for healthy adults
400-500 ms	Below average	Tired, distracted, or a slow display
500+ ms	Take a breath	Coffee first, test again after