Test Your Reaction Time & Reflex Speed

The global average visual reaction time for a healthy human is between 240 and 275 milliseconds on standard 60Hz consumer displays (learn the full standardized testing protocol in our guide on how to test reaction time). Auditory reaction time is significantly faster, averaging 140 to 175 milliseconds (see our guide on auditory vs visual reaction time), because mechanical cochlear hair cells transduce acoustic sound waves into nerve impulses in under 10ms, compared to the 30–40ms biochemical enzyme cascade required by retinal cone photoreceptors.

Scores between 185ms and 210ms place an individual in the top 5% of global performers. Times between 160ms and 185ms represent the elite top 1%, typical of professional esports athletes, Formula 1 drivers, and Olympic sprinters (detailed in our study of F1 drivers and human benchmark percentiles). Scores under 150ms on visual tests approach the absolute biological speed limit of human nerve conduction and are often achieved on 240Hz+ gaming monitors with 1000Hz polling mice.

No. A visual or auditory reaction time under 100 milliseconds without anticipation is biologically impossible for human beings. World Athletics (IAAF) rules state that any sprinter reacting to the starting gun in under 100ms is automatically penalized for a false start (analyzed in reaction time for sports), as physiological conduction from ear to leg muscles requires at least 100ms. Any digital test score under 120ms is statistically an anticipatory guess rather than a true stimulus reaction.

Auditory stimuli are processed 30 to 50 milliseconds faster than visual stimuli due to receptor physics. In the ear, sound waves mechanically deflect stereocilia on hair cells, opening ion channels in under 10 microseconds. In the eye, light must activate rhodopsin/opsin photopigments, stimulate transducin, activate phosphodiesterase (PDE), and break down cyclic GMP before sodium channels close because a multi-step biochemical cascade consuming 25 to 40 milliseconds before the first electrical spike is generated.

Hardware configuration significantly impacts measured scores. A standard 60Hz display draws a new frame every 16.67ms, introducing an average frame delay of 8.3ms. A 240Hz monitor draws a frame every 4.16ms, saving approximately 12.5ms in visual display delay. Combined with a 1000Hz gaming mouse (1ms polling) versus a standard Bluetooth mouse, elite setups can reduce measured latency by 20 to 35 milliseconds (see our gaming hardware latency guide).

Human reaction time peaks between the ages of 18 and 24, when nerve conduction velocity and synaptic neurotransmitter density are at their biological zenith. Beyond age 24, reaction time gradually slows by approximately 2 to 6 milliseconds per decade through middle age (detailed in our age and reaction time study).

Yes. While raw peripheral nerve conduction speed is biologically fixed by axon myelination, deliberate cognitive training can improve reaction times by 20 to 50 milliseconds. Explore evidence-based techniques in our guide on how to improve reaction time.

Intra-individual variability (reaction time jitter) is normal and driven by cortical brainwave cycles, attention, and motor consistency (see our breakdown on understanding reaction time results). At any given millisecond, your visual cortex fluctuates through phases of alpha rhythm (8–12Hz) excitability.