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Free Online Keyboard Tester

Check every key, test rollover, measure typing speed and detect stuck or broken keys instantly

0
Keys Pressed
0
Unique Keys
0
Keys Tested
0
WPM
0
keys held
0
Errors
Last Key Pressed
Press any key...
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key
—
Code
—
KeyCode
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Modifiers
Caps Lock: OFF Num Lock: OFF
Full Keyboard Layout
Show tested
Pressed
Tested
Not tested
Currently Held Keys
Hold multiple keys to see them here
Typing Speed Test
Progress0%
0
WPM
0
Raw WPM
100%
Accuracy
0
Errors
0s
Time
N-Key Rollover Test

Hold as many keys simultaneously as possible. A good keyboard should register all of them without ghosting.

Hold multiple keys together. This helps you check whether your keyboard supports gaming-style multi-key input.
0
Max Simultaneous
0
currently held
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Rollover Type
How to interpret:
• 1-2 keys: Basic keyboard (common on cheap membranes) • 3-6 keys: 6KRO — Good for gaming & typing • 7+ keys: NKRO — Full N-Key Rollover (mechanical keyboards)
Key Press Heatmap
Intensity:
Low → High
Most Pressed Keys
Press keys to see rankings here
Common Shortcut Tester

Press the listed shortcut to check if your keyboard registers it correctly.

Event History
No events yet. Press any key.
Quick keyboard health check

How to use Keyboard Tester Pro

Press any key on your physical keyboard and the matching key will light up instantly. Use the tabs to check typing speed, rollover support, heatmap usage, shortcuts and event history in one clean dashboard.

Live response preview Pressed, tested and held keys are highlighted with different states.
82%
01

Open Live Test

Click inside the page and press keys one by one. The visual keyboard will show pressed and tested keys.

02

Check key details

See the key name, code, keyCode and active modifiers like Ctrl, Alt, Shift or Meta in real time.

03

Test combinations

Use N-Key Rollover and Shortcuts tabs to confirm that multiple key presses register correctly.

04

Review results

Use Heatmap and History to find frequently pressed keys, missed keys or unusual keyboard behavior.

Best testing tips
Test all letters, numbers, function keys and modifier keys separately. Test all letters, numbers, function keys and modifier keys separately. Use Reset before testing another keyboard so the results stay clean.
Privacy and compatibility
The tester runs in your browser and does not need file upload or account login. Some system shortcuts may be captured by your browser or operating system first. Works best on desktop browsers with a physical keyboard connected.
Powerful keyboard testing features

Everything you need to test your keyboard properly

Check every key, keyboard response, typing speed, shortcuts, rollover support and key press history with a clean browser-based tool.

Live Key Detection

Press any key and instantly see it highlighted on the virtual keyboard with key name, code and keyCode details.

Real time

N-Key Rollover Test

Hold multiple keys together to check how many simultaneous key presses your keyboard can register correctly.

Gaming ready

Typing Speed Test

Measure WPM, raw speed, accuracy, errors and typing time with a clean typing practice interface.

WPM checker

Key Press Heatmap

Track your most pressed keys visually and understand keyboard usage patterns with intensity-based colors.

Visual stats

Shortcut Tester

Test common shortcuts like copy, paste, undo, save, refresh, screenshot and developer tools.

Shortcut check

Event History

View keydown and keyup events with time, key name and key code to detect missed or unusual key behavior.

Detailed logs
About this tool

Online Keyboard Tester for checking every key accurately

Keyboard Tester Pro helps you check whether your keyboard keys are working correctly or not. When you press a key, the tool detects the keyboard event and highlights the matching key on the screen.

This is useful for testing new keyboards, old keyboards, laptop keyboards, gaming keyboards and mechanical keyboards. You can also check stuck keys, broken keys, shortcut issues and multi-key pressing problems directly from your browser.

Detect broken or stuck keys Press each key and confirm whether it responds properly on the virtual keyboard layout.
Check multiple key support Use rollover testing to see how many keys your keyboard can register at the same time.
Improve typing performance Use the typing test and heatmap to understand speed, accuracy and frequently used keys.
Testing examples

Common ways to use the keyboard tester

Press any letter, number or function key. If the key lights up, your keyboard is sending the input correctly.

Example 1: Test a single key

Q W E R
key W detected

Press any letter, number or function key. If the key lights up, your keyboard is sending the input correctly.

Example 2: Test shortcuts

Ctrl Shift Esc
Shortcut registered

Use the shortcut tab to check combinations like Ctrl + C, Ctrl + V, Ctrl + S, Alt + Tab and Ctrl + Shift + Esc.

Example 3: Test rollover

A S D F J
5 keys held

Hold multiple keys together. This helps you check whether your keyboard supports gaming-style multi-key input.

Example 4: Typing speed check

WPM 64 98%
Speed measured

Use the typing speed tab to measure words per minute, raw typing speed, accuracy and typing errors.

Example 5: Heatmap usage

A E Space S
Most used keys shown

Check which keys are pressed most often and quickly spot repeated usage patterns while testing.

Example 6: Event history

DOWN KeyA UP
Event logged

Use history to see keydown and keyup events. This is useful for checking stuck keys or missed key releases.

FAQ

Keyboard Tester FAQs

Answers to common questions about key testing, shortcuts, rollover, privacy and browser support.

It listens for keyboard events in your browser. When you press a key, the matching virtual key lights up and shows details like key name, code, keyCode and modifiers.
Some keys are controlled by your browser or operating system first, such as volume keys, brightness keys, power key or a few system shortcuts. Those keys may not always be available to websites.
N-Key Rollover means how many keys your keyboard can register at the same time. It is useful for gaming, fast typing and shortcut-heavy work.
No. This keyboard tester runs directly inside your browser. It does not require login, file upload or server-side processing for testing keys.
Yes. You can test laptop keyboards, USB keyboards, wireless keyboards, gaming keyboards and mechanical keyboards as long as your browser receives the key input.
The heatmap shows which keys you press most often. It helps you understand typing patterns and quickly notice repeated or unusual key activity.