⚡ Reflex Benchmark

Human Reaction Time Test

Benchmark your visual reaction speed in milliseconds across 5 attempts. Click the pad when it turns bright green!

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Click to Start

When the red screen turns bright GREEN, click as fast as possible!

Human Reaction Time Benchmarks & Science

The average human visual reaction time is approximately 250 to 275 milliseconds (roughly one-quarter of a second). During this brief window, photon receptors in your retinas convert light into electrical impulses, travel along the optic nerve to the primary visual cortex in the brain, process the stimulus, transmit motor commands down the spinal cord, and contract muscles in your finger to register the click.

Global Reaction Time Percentile Tiers

Hardware Latency Factors

Your actual score includes both biological response time and hardware input lag. Standard 60Hz computer monitors add a display buffer of 16.6ms per frame, wireless mice introduce 8 to 15ms of Bluetooth latency, and browser rendering loops contribute 5 to 10ms.