About reaction-time-test.io
We built the reaction time testing platform we wished existed — accurate, transparent, and grounded in science.
Our Mission
reaction-time-test.io provides free, accurate, and science-backed tools for measuring and understanding human reaction time. We believe everyone should have access to the same caliber of cognitive testing that researchers and clinicians use — without paywalls, account requirements, or intrusive tracking.
Our tests are designed with precision in mind: minimal input latency through the Web Audio API, statistically robust multi-trial protocols, and clear performance benchmarks drawn from published research. Whether you are a gamer benchmarking your reflexes, a student studying cognitive science, an athlete tracking neural fitness, or simply curious about how fast your brain works, our platform gives you reliable data and the context to interpret it.
What We Offer
Reaction Time Tests
Six distinct tests — simple visual, auditory, F1 race start, aim tracking, sequence memory, and color choice — each measuring a different aspect of cognitive and motor speed.
Data & Benchmarks
Comprehensive average reaction time data by age, gender, and activity level, drawn from peer-reviewed studies and large-scale datasets.
Science & Education
In-depth articles on the neuroscience of reaction time and evidence-based methods to improve it, written for a general audience but grounded in academic research.
Privacy-First Design
No accounts, no tracking cookies, no personal data collection. Your test scores are stored locally in your browser and never leave your device. Read our privacy policy for details.
Our Content Methodology
Every statistic, benchmark, and scientific claim on this site follows a rigorous editorial process:
Research & Source Selection
We draw from peer-reviewed journals (e.g., Journal of Experimental Psychology, Neuroscience Letters, Sleep), authoritative organizations (World Athletics, FIA), and large-scale cognitive testing datasets. We prioritize meta-analyses and systematic reviews over individual studies.
Fact-Checking & Cross-Referencing
Every claim is verified against multiple independent sources. Statistics are cross-referenced for consistency across pages. When research findings conflict, we present the consensus view and note where debate exists.
Clarity & Honesty
We translate academic findings into accessible language without overstating conclusions. Where evidence is uncertain or debated, we say so. We use hedging language ("research suggests," "approximately") rather than implying false precision.
Regular Review
Content is periodically reviewed and updated to reflect the latest research. Article pages display publication and last-modified dates so readers know how current the information is.
Disclaimer
reaction-time-test.io is an educational and entertainment platform. The tests and information provided on this site are not intended to diagnose, treat, or substitute for professional medical or psychological advice. While our content is based on published scientific research, it is written for a general audience and should not be used as the sole basis for clinical or health decisions.
Online reaction time measurements are subject to hardware variability (monitor refresh rate, input device latency, browser rendering) and do not replicate the controlled conditions of a laboratory setting. Your results are best used for self-comparison and general benchmarking, not clinical assessment.
If you have concerns about your cognitive function, reaction time, or neurological health, please consult a qualified healthcare professional.
Contact Us
Have a question, found an error, or want to suggest an improvement? We welcome feedback.
Email: contact@reaction-time-test.io
For content corrections or source disputes, please include a link to the relevant page and, if possible, a reference to the source you believe is more accurate. We take factual accuracy seriously and will review and update content promptly.