Press the key shown as soon as it turns green. Don't press early!
Grey = wait. Green = press now! Red flash = you pressed too early.
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Keyboard latency is the delay between the moment you physically press a key and the moment your computer registers it. This keyboard latency test measures that delay directly in your browser, showing you average latency, your best and worst rounds, consistency, and any false starts where you pressed before the prompt turned green.
Run through 5, 10, 15, or 20 rounds using space only, random letters, arrow keys, or WASD — whichever matches how you actually use your keyboard, whether that’s gaming, typing, or general navigation.
Every keyboard has some delay built in, caused by the physical switch, the debounce logic in the keyboard’s controller, the USB polling rate, and how your operating system processes the signal. None of this is instant, even on expensive mechanical keyboards — the only real question is how small the delay is and how consistent it stays round after round.
The test shows you a key, waits a randomized delay so you can’t anticipate the timing, then turns the prompt green as your cue to press. The time between the color change and your keypress is your reaction-plus-hardware latency for that round. Because human reaction time varies far more than keyboard hardware does, we track your best times and consistency (σ) alongside the average — your fastest rounds are the closest approximation of your keyboard’s true hardware latency.
In practice, most mechanical keyboards register keypresses within a few milliseconds once you strip out human reaction time, while cheaper membrane keyboards and some wireless boards can add noticeably more. If your average latency looks unusually high across every key set, it’s worth double-checking your keyboard’s response on every key and your USB port before assuming the keyboard itself is at fault.
Wireless keyboards, especially Bluetooth ones, typically add more latency than a wired connection because the signal has to be encoded, transmitted, and decoded before your computer ever sees it. A 2.4GHz USB dongle is usually faster than Bluetooth, and a wired connection is usually faster still. If competitive timing matters to you, testing both connection modes on the same keyboard is worth the extra minute.