Reaction Time Test
Benchmark your visual reaction speed in milliseconds. See where you rank against competitive players.
Reaction time is the elapsed duration between a visual stimulus appearing and your physical response (clicking). For competitive gaming, it represents the last step in the input chain — after your system has processed and displayed the game state. Lower input lag means your game state updates sooner, giving your reaction time less work to compensate for.
What This Test Measures
Visual Reaction Speed
Time from stimulus display to click registered. Measured in milliseconds across multiple attempts for statistical reliability.
Percentile Ranking
Compares your reaction time against competitive player distributions. Elite (<150 ms), Pro (<180 ms), Competitive (<220 ms), Above Average (<270 ms).
Consistency
Tracks best time vs. average across attempts. High variance between attempts indicates inconsistent focus or anticipation timing.
What Affects Your Score
System Input Lag
Adds directly to measured reaction time. 30 ms of input lag means your true biological reflex speed is 30 ms faster than the test shows.
Monitor Refresh Rate
At 60 Hz, the stimulus can be displayed up to 16.67 ms late. At 240 Hz, this is 4.17 ms. Higher refresh rate = more accurate measurement.
Attention State
Sleep, caffeine, stress, and practice state create 20–40 ms of natural variation in biological reaction speed.
Anticipation
Clicking before the stimulus appears (anticipation) produces artificially fast times. The test randomizes timing to detect and account for this.
Click Mechanism
Heavy mechanical switches have longer actuation travel than optical switches. Spring weight and actuation distance contribute a small amount to measured click latency.
Score Reference
Responsiveness Score Ranges
How to Improve Your Score
Reduce your system's input lag first
Before training reaction speed, optimize the system layer. Every ms of input lag is added directly to your reaction measurement. See our Input Lag Optimization Guide.
Use a high refresh rate monitor
240 Hz reduces frame delivery delay from 16.67 ms (60 Hz) to 4.17 ms. This is passive latency reduction — no training required.
Warm up before benchmarking
Take 3–5 practice attempts before recording your score. Cold reaction times are consistently 20–30 ms slower than warmed-up performance.
Practice pre-aiming over pure reaction
In competitive games, pre-aiming (placing crosshair at expected enemy positions) eliminates the reaction component from most duels. This is more reliable than training raw reflexes.
Reduce in-game render delay
Disable V-Sync, set GPU pre-rendered frames to 1, and enable NVIDIA Reflex (or AMD Anti-Lag). These changes reduce the delay between game state update and screen display.
Optimize With the Desktop App
Apply all optimizations automatically. InputLag's desktop app manages power plans, GPU settings, and timer resolution persistently — no manual tweaking.