Keyboard Latency Test
Press any key when the signal appears to measure your keyboard input lag and reaction time in milliseconds.
What is Keyboard Latency?
Keyboard latency is the time between physically pressing a key and the computer registering that keypress as input. It is measured in milliseconds (ms). Lower latency means the keyboard responds more quickly to your inputs, which matters in competitive gaming, fast typing, and any task where timing is important.
Several factors contribute to total keyboard latency. The polling rate determines how often the keyboard reports its state to the computer - a 1000 Hz polling rate checks for input 1000 times per second (every 1 ms), while a standard 125 Hz keyboard checks only 8 times per second (every 8 ms). Switch actuation speed, USB bus timing, and system load all add their own small contributions to the total delay.
For most everyday use, keyboard latency is imperceptible. However, competitive gamers, professional typists, and anyone who notices a "floaty" or delayed feeling from their keyboard will benefit from knowing their actual numbers. Identifying high latency can help you determine whether the issue is hardware, software, or settings.
How to Use the Keyboard Latency Test
Press any key when prompted by the tool. Each keypress is recorded with its response time in milliseconds. After several presses, the tool calculates your average latency, your best (lowest) latency, and your jitter - the variation between keypresses. Lower average latency and lower jitter both indicate a more responsive keyboard.
Run the test multiple times to get a stable average. A single reading can be affected by momentary system load. After five to ten keypresses you will have a representative picture of your keyboard's actual performance.
Compare your results across different keyboards if you have more than one available. A gaming keyboard with 1000 Hz polling and fast switches will typically show 1 to 5 ms average latency, while a standard office keyboard may show 8 to 20 ms or higher.
What the Numbers Mean
Average latency between 1 and 5 ms is excellent and typical of quality gaming keyboards with high polling rates. Average latency between 5 and 15 ms is the normal range for solid keyboards. Above 20 ms may be noticeable during fast typing or competitive gaming. Above 50 ms is a sign of a hardware issue or a very old, budget keyboard.
Jitter refers to the inconsistency in latency between keypresses. A keyboard with 3 ms average latency but 10 ms jitter is less predictable than one with 5 ms average and 1 ms jitter. Consistent latency is more important than occasional low readings.
If you find your latency is high, check whether your keyboard is plugged into a USB 2.0 hub rather than directly into the computer - hubs can add latency. The mechanical keyboard tester can help identify switch issues, and the full keyboard tester verifies all keys are registering correctly.
Latency vs Typing Speed
Keyboard latency and typing speed are related but different. Latency is a hardware measure - how quickly the keyboard responds. Typing speed is a skill measure - how quickly you can produce accurate text. You can have low latency and still type slowly, or type quickly on a high-latency keyboard at the cost of occasional mistimings.
For competitive typists who want to push their words-per-minute score, minimizing keyboard latency removes one hardware variable from the equation. The typing speed test gives you your current WPM and accuracy baseline. The spacebar clicker tests your spacebar specifically, which is often the most-used key in typing.
Frequently Asked Questions
What is a good keyboard latency?
For gaming, 1 to 5 ms is ideal. For general use, anything under 20 ms is unlikely to be noticeable. Competitive gaming is far more sensitive to latency than word processing.
Does keyboard latency affect gaming?
Yes, especially in fast-paced games where input timing matters. High keyboard latency can cause ability timing issues in MOBAs, missed jumps in platformers, and delayed reactions in first-person shooters.
Will a mechanical keyboard improve my latency?
A high-quality mechanical keyboard with a 1000 Hz polling rate will typically show lower and more consistent latency than a membrane keyboard. The improvement is measurable but may not be perceptible in casual gameplay.
Can wireless keyboards have low latency?
Modern wireless gaming keyboards can achieve latency comparable to wired keyboards. Older or budget wireless keyboards typically show higher latency due to lower polling rates.