What is average keyboard latency?

Most keyboards fall between 1ms and 15ms depending on switch type (mechanical vs membrane) and connection method.

How is keyboard scan rate calculated?

Scan rate in Hz equals 1000 divided by the shortest key press time in milliseconds. A 2ms press time gives an estimated scan rate of 500Hz.

Which keyboard has the lowest latency?

The Logitech G915 TKL achieves as low as 1.3ms in wired mode, placing it among the fastest available keyboards today.

Does keyboard polling rate affect latency?

Yes. At 125Hz polling rate latency is around 8ms. At 1000Hz it drops to roughly 1ms. Higher polling rate equals lower latency.

How can I reduce keyboard latency on Windows?

Update keyboard drivers, disable Filter Keys in accessibility settings, use a wired USB 3.0 connection, and close background applications.

Keyboards · June 15, 2026 · 6 min read

Keyboard Latency Explained: What It Is and Why It Matters for Gaming

Scan rate, polling rate, response time — these terms get thrown around a lot. Here's what they actually mean and how they affect your gameplay.

You press a key. The character jumps. Simple, right? But between that keypress and the action on screen, several tiny delays stack up — and in competitive gaming, those milliseconds matter.

This guide breaks down everything you need to know about keyboard latency: what causes it, how to measure it, and what you can do to reduce it.

What is Keyboard Latency?

Keyboard latency is the total time delay between when a physical key is pressed and when the corresponding input is processed by your computer. It's sometimes called "keyboard input lag" and is measured in milliseconds (ms).

Quick example: You press the fire button in a game. If your keyboard latency is 15ms, there's a 15-millisecond gap before the game engine registers the action. At 60fps, one frame takes ~16.7ms — so 15ms of keyboard lag is nearly a full frame of delay.

The 3 Components of Keyboard Latency

Total keyboard latency is actually the sum of three separate delays:

1. Scan Rate

The scan rate is how many times per second the keyboard's internal controller scans all the key switches to detect presses. A typical keyboard scans at 1000Hz (1ms). Lower-end keyboards may only scan at 125Hz (8ms between scans).

2. Polling Rate

Once a keypress is detected, the keyboard needs to report it to your PC. The polling rate is how often this report is sent — typically 1000 times per second (1000Hz = 1ms). Some gaming keyboards now offer 4000Hz or 8000Hz polling.

3. System Latency

After the signal reaches your PC, the operating system and application need to process it. This adds another 3–10ms depending on your system load, drivers, and software.

Real example: 5ms (key debounce) + 1ms (polling rate) + 5ms (system latency) = 11ms total keyboard latency. This is how most latency calculators, including our own tool, break down the number you see on screen.

Scan Rate Formula

Scan rate is calculated as: Scan Rate (Hz) = 1000 ÷ shortest key press time (ms). If your fastest recorded press is 2ms, your keyboard's estimated scan rate is 500Hz. The lower your press time, the higher your effective scan rate — and the lower your overall latency.

Component	Typical Delay	Gaming Keyboards
Scan Rate	1–8 ms	0.25–1 ms
Polling Rate	1–8 ms	0.125–1 ms
System Latency	3–10 ms	1–5 ms
Total	5–26 ms	1.4–7 ms

Does Keyboard Latency Actually Affect Gaming?

For casual gaming and everyday use — no, you won't notice the difference. But in competitive scenarios, it adds up:

FPS games: Firing speed and reaction windows are measured in frames. At 240fps, one frame = 4.17ms. Every ms counts.
Fighting games: Frame data is everything. A 10ms delay could cause you to miss a punish window entirely.
RTS and MOBA: Less critical, but consistent, low-latency input prevents misclicks and double inputs.

Wired vs Wireless Keyboard Latency

Wired USB keyboards have traditionally offered lower latency than wireless. However, modern wireless technology — especially 2.4GHz USB dongles — has nearly closed the gap. Bluetooth keyboards still have noticeably higher latency (~10–30ms extra) and are not recommended for gaming.

How to Test Your Keyboard Latency

You can test your keyboard's response time and scan rate right now using our free tool — no downloads or accounts required.

⌨️ Free Keyboard Latency Test

Measure your keyboard's shortest key press time and estimated scan rate instantly in your browser.

Test My Keyboard →

How to Reduce Keyboard Latency

Use a wired connection — avoid Bluetooth for gaming
Update keyboard drivers — outdated drivers add overhead
Disable Filter Keys in Windows accessibility settings
Use a USB 3.0 port for better data transfer speeds
Close background apps — they add system latency
Consider a gaming keyboard with 1000Hz+ polling rate

Summary

Keyboard latency is a combination of scan rate, polling rate, and system processing time. For everyday users, even a 20ms keyboard is perfectly fine. But for competitive gamers, targeting total input latency below 5ms — through a quality gaming keyboard and clean system setup — can make a real difference.

The best first step? Test your current keyboard with our free tool and see what you're actually working with.