Input Lag & Reaction Time Test
Click the box when it turns green to measure your total system reaction time. This provides an estimate of your monitor and mouse input lag.
Click to Start the Input Lag Test
Your reaction time is: --- ms
Understanding the Input Lag Test
True input lag (the delay between your graphics card sending a frame and your monitor displaying it) cannot be measured by a website alone. However, this reaction time test provides a good approximation of your total system latency a crucial factor for competitive gaming.
- What it measures: The final score includes your personal reaction time, your mouse's hardware latency, OS/driver processing time, AND your monitor's display lag.
- How to use the test: Click the red box to begin. It will turn grey. When it turns green, click as fast as you can. Your total reaction time will be displayed.
- For best results: Run this input lag test several times to get a stable average. A lower score is better, indicating a more responsive system.
Input Lag Test FAQ
What is considered a good score on this input lag test?
The average human reaction time is around 200-250ms. A good total system latency (including your reaction) for gaming would be below that. Professional gamers with low-latency equipment might score under 180ms. This test is best used to compare different settings or hardware (e.g., trying a different mouse or enabling 'Game Mode' on your monitor).
How can I reduce my input lag?
To reduce input lag, you can: use a high refresh rate gaming monitor, enable 'Game Mode' on your display, use a wired gaming mouse with a high polling rate, and ensure your graphics drivers are up to date. Closing unnecessary background applications can also help.