Online keyboard tester showing a full keyboard diagnostic workspace

KeyboardTester.click

Free N-Key Rollover & Ghosting Test

Free N-key rollover (NKRO) and anti-ghosting test. Press multiple keys at once to see how many your keyboard registers, find blocked key combos, and check key latency. No install needed.

Start test Keyboard tools
Download from Microsoft Store Download from Microsoft Store

N-Key Rollover & Ghosting Test

Test every key, check keyboard ghosting, review N-key rollover, and use Advanced Options or Pro Test diagnostics in the same browser workspace.

Key History
Full game
Press keys to clear the maze!
Ready
Dots: 0/10 0%
📱 Mobile Keyboard Tester
Q
W
E
R
T
Y
U
I
O
P
A
S
D
F
G
H
J
K
L
Z
X
C
V
B
N
M
1
2
3
4
5
6
7
8
9
0
Space
.
,
@
!
?
Characters Typed 0
Unique Keys 0/42
Tip: Use your device's keyboard (appears when you tap the input field above). Each key you press will light up on the visual keyboard!
Caps
Num
Scroll
Rate Keyboard Tester: 5.0 (9 ratings)
KeyboardTester.click assistant

Free for your site

Embed this Keyboard Tester on your website

Add this free, no-signup tool to your own page or blog post in one click — just keep the small credit link.

Keyboard Tester is a free, browser-based keyboard testing tool that lets you check every key, detect stuck keys, test ghosting, and verify keyboard input.

  • Cost: Free, no signup
  • Install: None — runs in the browser
  • Privacy: Runs locally, no uploads
  • Platforms: Windows, macOS, Linux, Android, iOS
  • Time: Under a minute

Keyboard Tester guide

How to use the Keyboard Tester accurately

Test keyboard functionality, detect ghosting, measure latency, check for stuck keys

01 Open the live test Use the browser tool below without installing software or changing your current page.
02 Run one clean pass Follow the on-screen controls and keep the input steady so the result is repeatable.
03 Repeat if the result looks wrong Run the same check again before deciding whether the device, browser, or operating system is the cause.
04 Compare with related diagnostics Use the linked tools to confirm whether the same symptom appears in another hardware check.

Related guide How to Test a Keyboard Online: Keys, Ghosting, NKRO and Latency →

n-key rollover test nkro test anti-ghosting test keyboard ghosting test key rollover checker simultaneous key press test

Keyboard Tester FAQ

Common keyboard tester questions

What is a key test?

A key test checks whether each physical keyboard key sends the expected input to your browser. Press one key at a time, watch the visual keyboard highlight, and use the key history to catch missed, repeated, or wrong inputs.

Is this an online keyboard checker?

Yes. This page works as an online keyboard checker for desktop, laptop, USB, Bluetooth, Windows, Mac, and compact keyboards. It runs in the browser, so you can test keyboard keys without installing software.

How do I test my keyboard online?

Click inside the tester and press any key. The key highlights on the visual keyboard and appears in key history.

Why does a key not register in the keyboard tester?

Make sure the page is focused, press the key firmly, and confirm your OS language matches the selected layout.

Can I test keyboard ghosting or multiple key presses?

Yes. Press several keys together to see which keys register and identify ghosting issues.

Does the keyboard tester work with different layouts?

Yes. You can switch between QWERTY, AZERTY, Dvorak, and Colemak, plus Windows or Mac labels.

Windows app

KeyboardTester.click is available from Microsoft Store

Install the official Windows app shortcut, or keep using the same free testing tools in your browser.

Download from Microsoft Store Download from Microsoft Store