Keyboard Tester
Press keys to check that every key on your keyboard works, with key codes.
Key
–
Code
–
Key code
–
Location
–
Press any key to start.
Keys light up while pressed and turn green once tested. Some keys (like the Windows key or Print Screen) may be captured by your operating system first. Laptop Fn keys never reach the browser.
Processing and privacy
Processing varies by tool. Check the instructions for local processing, server requests, external services and any file or request limits before entering sensitive information.
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Clear instructions
Find steps, examples and limitations below.
Use online
Open the tool in a supported web browser.
Free to use
No sign-up required. Tool-specific limits may apply.
How to use the Keyboard Tester
Press keys to check that every key on your keyboard works, with key codes.
- 1 Click the page, then press each key.
- 2 Pressed keys light up and turn green once tested.
- 3 Check the tested count and the recent keys list, and click Reset to start again.
Example and practical tips
After spilling a drink, press every key: any key that never turns green is not registering and may need cleaning or replacing.
Frequently asked questions
Why don’t Fn or media keys show?
Laptop Fn keys and some media keys are handled by the keyboard or operating system and never reach the browser.
What is the difference between key and code?
Key is the character typed (it depends on the layout), and code is the physical key position.
Practical guides
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How to Use Keyboard Tester
Press keys to check that every key on your keyboard works. Keys light up on a full layout and show their key, code, key code and location.
Report an issue
Something broken or not quite right? Tell us and we will look into it.