Keyboard Latency Test: Understanding and Measuring Keyboard Response Time

2 min read
21 January 2023

Latency, or delay, is an important factor to consider when it comes to computer peripherals such as keyboards. Keyboard latency refers to the time it takes for a keyboard to register a key press and send that information to the computer. High latency can cause typing lag and make typing feel unresponsive.

Measuring Keyboard Latency

There are a few different ways to measure keyboard latency. One popular method is to use a tool called a keyboard latency tester. These programs can be downloaded and run on a computer, and they will measure the time it takes for a key press to register on the computer. Another way to measure keyboard latency is to use a stopwatch or other timer to manually measure the delay between pressing a key and seeing the corresponding letter appear on the screen.

Factors that Affect Keyboard Latency

There are a few factors that can affect keyboard latency. One of the most significant is the connection type. USB keyboards generally have lower latency than those that connect via PS/2 or Bluetooth. The quality of the keyboard itself can also play a role in latency, as some cheaper keyboards may have more delays than more expensive models.

Another factor that affects keyboard latency is the computer's performance. If a computer is running many programs at once or is low on resources, it may take longer for key presses to register.

Reducing Keyboard Latency

If you're experiencing high keyboard latency, there are a few things you can try to reduce it. One option is to update the keyboard's driver, as this can sometimes improve performance. Another is to reduce the number of programs running on the computer at the same time, as this can help free up resources for the keyboard.

If the problem persists, you may want to consider upgrading to a newer or higher-quality keyboard. USB keyboards generally have lower latency than those that connect via PS/2 or Bluetooth.


Keyboard latency is an important factor to consider when it comes to typing comfort and productivity. By understanding what causes latency and how to measure it, you can take steps to reduce it and improve your typing experience.


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Henry Smith 2
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