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Keyboard Latency Test - Measure Input Lag, Scan Rate, Response

IObit Keyboard Latency Test measures your keyboard input latency, estimates key press duration and keyboard scan rate in real time. Press any key to begin testing.
Shortest Key Press
--
Minimum key press duration
Shortest key press duration recorded during the current session
Estimated Scan Rate
--
Calculated from shortest key press
Estimated keyboard scan rate based on shortest key press.
Key Press History
Clear History
Key Latency
Press any key to test.
WAITING FOR INPUT
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What Is a Good Keyboard Latency? Keyboard Delay Test

What Is a Good Keyboard Latency? Keyboard Delay Test

Test Keyboard Latency

Excellent

Extremely low latency with a highly responsive feel, ideal for competitive gaming.

≤ 2 ms

Keyboard Latency

1000–8000 Hz

Polling Rate

2000–8000+ Hz

Scan Rate

≤ 2 ms

Response Time

Acceptable

Low latency that should feel responsive for gaming and everyday use.

5–10 ms

Keyboard Latency

125–500 Hz

Polling Rate

125–1000 Hz

Scan Rate

5–10 ms

Response Time

High Latency

Input may feel less responsive, especially in fast-paced or competitive games.

>10 ms

Keyboard Latency

<125 Hz

Polling Rate

2000–8000+ Hz

Scan Rate

>10 ms

Response Time

How to Test Keyboard Latency Online for Free?

Test Keyboard Latency

Press Any Key to Test

Whether you’re using Mac or Windows, every key press is recorded and measured in milliseconds (ms).

Check Key Press History

Compare your key-press latency with the standard ms ranges above to check keyboard latency.

Solve Keyboard Latency Problem

Try switching the connection type or updating your keyboard drivers to reduce latency.

Common Causes of High Keyboard Latency/Response Time

Wondering, “Why is my keyboard lagging?” Start by checking these four common causes.

Test Keyboard Latency

1. Keyboard Connection Type

Wired USB connections typically offer the most stable response, while Bluetooth may introduce higher or more variable latency.

2. Outdated or Faulty Keyboard, USB, or Chipset Drivers

Outdated, corrupted, or incompatible drivers can interfere with keyboard communication and cause delayed or unstable input.

3. High CPU or System Load

Heavy CPU usage and too many background processes can delay keyboard input processing and cause inconsistent response times

4. Keyboard Firmware

Outdated or poorly optimized firmware can affect key scanning, debounce, and wireless processing, increasing overall keyboard latency.

Four Main Causes of High Keyboard Latency line line line line Four Main Causes of High Keyboard Latency

5. Bonus Tip: Windows settings that may affect kyboard input:

1. Filter Keys, 2. Sticky Keys, 3. Power-saving settings, 4. USB selective suspend

How to Reduce Keyboard Latency

To solve your keyboard lagging problems, you can try the 5 methods below.

Test Keyboard Latency
Change Wireless Connection to Wired Connection

Use a Wired Connection

Change Wireless Connection to Wired Connection

A wired or 2.4GHz connection can help reduce keyboard latency and provide a faster, more consistent response.

Increase the Keyboard Polling Rate

Increase Polling Rate to Reduce Keyboard Latency

Keyboard Settings > Polling Rate / Report Rate > Increase Polling Rate from 125Hz → 500Hz → 1000Hz → 4000Hz.

Update Your Keyboard Firmware

Update Firmware to Reduce Keyboard Latency

Update your keyboard firmware through the manufacturer's official software. Firmware updates can improve overall input responsiveness.

Update Keyboard, USB, and Chipset Drivers

Update Three PC Drivers to Reduce Keyboard Latency

Keeping relevant drivers up to date can resolve communication issues that cause keyboard input lag.

Reduce CPU and System Load

Unburden CPU and System Load to Reduce Keyboard Latency

Open Task Manager to close unnecessary background applications and reduce input-processing delays to improve latency consistency.

Free Smart Game Booster – Boost FPS & Reduce Lag
Optimize your PC for smoother gameplay, higher FPS, lower latency, and a faster gaming experience in just a few clicks.
Smart Game Booster in partnership with IObit

Scenarios Where a Keyboard Latency Tester Matters

Keyboard latency matters most when gaming, upgrading your keyboard, updating drivers, or changing connection methods. Test your keyboard to check for responsive and consistent input.

Test Keyboard Latency
Keyboard Latency Caused Gaming Delay

This is one of the most frustrating reasons gamers turn to a keyboard latency test. You might notice your character takes a split second to move after you hit W, a jump feels slightly delayed when you press Space, or an ability doesn’t fire when you expect it to. These tiny delays can be especially noticeable in fast-paced FPS games, and a quick keyboard delay test can help you figure out whether your keyboard or system is causing the problem.

Scenario 1:

You Feel Delayed Input While Gaming

If you're experiencing gaming lag, a keyboard input lag test is a good place to start.

New Keyboard Always Needs A Latency Test

After buying a new keyboard from brands like Wooting, SteelSeries, Razer, Corsair, or Logitech, you may want to make sure it works smoothly with your PC. A keyboard latency tester gives you a quick way to check keyboard input lag and response time.

Scenario 2:

You just Bought a New Keyboard

Speed keyboard test is necessary for typing test.

Test to See If Updated New Keyboard Drivers Work Stably

If you recently updated your keyboard driver, USB driver, or chipset driver to solve keyboard delay problem/keyboard not typing problem, you may want to check whether there’s any positive changes. Running a keyboard test mac and Windows can help you compare input lag and identify potential changes in system-level input performance.

Scenario 3:

You just Updated Your Keyboard Drivers

New Drivers are very likely to have conflicts with your current system.

Test to See If Connection Type Changed Reduces Latency

Switching from Bluetooth to a wired USB connection or a 2.4GHz wireless dongle may improve your keyboard's response time. If you've recently changed your connection method, a keyboard delay test can help you compare the results and see whether your keyboard responds faster and more consistently.

Scenario 4:

You Changed the Keyboard Connection

Common sense: A wired keyboard usually responds faster than a wireless keyboard.

Keyboard Latency for Gaming: Recommended MS for FPS, MMO & MOBA

Test Keyboard Latency
Keyboard Latency Test for Gaming1

Valorant:
≤ 5 ms

Keyboard Latency Test for Gaming2

CS2:
≤ 5 ms

Keyboard Latency Test for Gaming3

Fortnite:
≤ 5–10 ms

Keyboard Latency Test for Gaming4

Rhythm games:
≤ 5 ms

Keyboard Latency Test for Gaming5

MMO:
≤ 10 ms

Keyboard Latency Test for Gaming6

MOBA:
≤ 10 ms

Frequently Asked Questions

1. What is a good keyboard latency for gaming?

Keyboard latency ≤ 5 ms is considered ideal for most games. And keyboard latency over 15 ms is worth of lag testing to check for driver problems, setting problems, and connection problems.

2. How does a keyboard latency test work?

The online keyboard delay test records each key press in real time to measure your keyboard’s input latency and key press duration.
It tracks the shortest key press and uses it to estimate your keyboard’s scan rate. The results show key latency and scan-rate data, helping you evaluate your keyboard’s response time.

3. Can an online keyboard test measure actual hardware latency?

No. A browser test cannot measure the full hardware latency inside your keyboard. It is mainly useful for checking browser-level input response.

4. What causes high keyboard latency?

Common causes include Bluetooth connections, high CPU or system load, outdated drivers, and outdated keyboard firmware. USB hubs and certain Windows settings can also affect input in some cases.

5. How can I reduce keyboard latency?

Try using a wired or 2.4GHz connection, increasing your keyboard's polling rate, updating its firmware and drivers, and closing unnecessary background programs.

6. Why keyboard not typing?

The issue is more likely a connection, driver, firmware, or hardware problem than normal keyboard latency. Check the USB/Bluetooth connection, update the keyboard drivers and firmware, and run a keyboard latency test to see if the keyboard is detecting your key presses.

7. Is 100ms keyboard latency good?

No. 100ms is considered very high keyboard latency and can make input feel noticeably delayed, especially in fast-paced games. For gaming, aim for 10ms or less, with 5ms or lower being a much more responsive range.

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