Speed Test
Reaction Time Test
Click the moment the screen turns green. We average five attempts for your score. Global average: 284ms.
284ms
Global average
<200ms
Top 1%
Age 24
Peak speed
8.4M+
Scores
⚡
Click to Begin
Wait for green, then click as fast as you can
Attempts:
Your Results
—
milliseconds — average across 5 attempts
—
Best
—
Worst
—
Percentile
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What reaction time measures
Reaction time is the complete interval from stimulus detection to motor response. This test measures simple visual reaction time — the most fundamental benchmark of neural processing speed.
The neural reaction chain
~50ms
Visual cortex detects color change
~80ms
Signal reaches motor cortex
~100ms
Motor command fires to finger
Total: 180–280ms for most people
Score distribution — 8.4M scores
Reaction time distribution (ms)
| Percentile | Reaction time | Classification |
|---|---|---|
| Top 1% | <160ms | Exceptional |
| Top 10% | 160–210ms | Elite |
| Top 25% | 210–250ms | Above average |
| 50th (median) | 250–300ms | Average |
| Bottom 25% | 300–360ms | Below average |
| Bottom 10% | >360ms | Slow |
Factors that affect your score
| Factor | Effect on RT | Evidence |
|---|---|---|
| Sleep deprivation (2hrs) | +20–40ms slower | High |
| Caffeine (100–200mg) | −10–30ms faster | Moderate |
| Regular practice (3 weeks) | −10–20ms faster | High |
| Phone touchscreen vs wired mouse | +30–100ms slower | High |
| Age (per decade after 25) | +2–5ms per decade | High |
| Aerobic exercise (post 30min) | −8–15ms for 1–2h | Moderate |
| Action video games (20–50hrs) | −15–25ms faster | Moderate |
Reaction time by age
240ms
Age 15–19
218ms
Age 20–24 (peak)
268ms
Age 45–54
310ms
Age 65+
Global Statistics
Total scores8,421,003
Global average284ms
All-time best112ms
Median271ms