Now say goodbye to delayed mouse movements and hello to better performance with Mouse Latency Test, which is an online tool that analyzes your mouse responsiveness and input lag so that you can improve your gaming experience.

Hardware Cursor
Use rAF Argument
Show Graph
Average Small Delta
0 ms
Override Event Time
Show Mouse Path
0 Mouse Events
0 ms


Checking your mouse for latency is crucial for productivity and enjoyment whether you are a gamer, graphic designer, or casual user. 

Mouse Latency Test is an online tool that can help you measure your mouse’s latency and identify any issues. Moreover, you can also get tips on improving your mouse’s performance and reducing its latency.


Mouse Latency is the delay between your mouse movement and its corresponding action on the screen.

Factors such as the mouse sensor quality, connection type, surface, computer performance, and settings can cause mouse latency. 

By identifying the source of the problem, you can take the necessary steps to fix it.

This test helps you detect input lag, and It’s crucial to test your mouse latency since it affects your work efficiency, gaming experience, and satisfaction with your mouse.


It offers real-time and interactive testing of your mouse’s reactions to movements and commands.

It’s a free and easy-to-use online tool that requires no downloads or installations.

The tool analyzes multiple data points to measure mouse latency accurately and provides various indicators and options to help you understand and adjust your results.

You can also get informative tips and FAQs about mouse latency and performance.

It suits gamers, graphic designers, or casual users who want to improve their mouse performance.

It provides fast and accurate results, identifying any issues with your mouse responsiveness.

The interface is user-friendly, and the results are easy to understand.

So, don’t let mouse lag ruin your experience; take your skills to the next level by testing your mouse responsiveness today with Mouse Latency Test.


To use this test, navigate to this tool on our website and move your mouse back and forth in the dedicated box.

Firstly, you’ll see two cursors, one for hardware and one for software. The difference between them indicates the input lag.

Upon moving your mouse, you will start observing a graph; you can estimate the millisecond lag using the light horizontal lines.

Moreover, you can also see the signal transmission and sync delays with the dark gray line.

In addition, you can customize the test by showing or hiding the mouse path, hardware cursor, and graph, overriding the event time, or using the rAF Argument.

You can also view the average small delta in milliseconds and the number of mouse events.

You only need a web browser and an internet connection to use the Mouse Latency Test.


Understanding your mouse’s performance is essential for better productivity. Here are some tips for interpreting results:

Lower input lag is better, ideally zero. Anything below 10ms is suitable for most purposes.

Lower signal transmission delay is better, which depends on connection type and USB port speed.

A lower sync delay is better, which depends on the monitor refresh rate and browser frame rate.

A smaller delta and a higher number of mouse events mean a more consistent and accurate mouse. Try cleaning the sensor or changing the surface for improvement.

By following these tips, you can optimize your mouse performance and enjoy smoother movement on the screen.


What is input lag, and why does it matter for gaming?

Input lag is the delay between your mouse movement and the on-screen response, impacting your gaming performance and reaction time.

How does Mouse Latency Test measure input lag?

The tool compares the hardware cursor’s position with the last recorded mouse position, considering the signal transmission delay and syncing with the screen’s refresh rate.

What customization options are available on Mouse Latency Test?

You can show/hide the mouse path, hardware cursor, and graph, override event time, and enable/disable the rAF Argument.

How can Mouse Latency Test improve your gaming performance?

The detailed results provided by this online tool can help you identify any issues with your mouse responsiveness and optimize your gaming experience.

What is the difference between hardware and software cursors?

The hardware cursor is the normal cursor controlled by the mouse and the operating system. In contrast, the software cursor generated by Mouse Latency Test shows the last recorded mouse position and represents input lag.

What is the rAF Argument, and how does it affect the results?

The rAF Argument synchronizes the animation with the monitor’s refresh rate, potentially reducing sync delay and introducing measurement inaccuracies.