Keyboard tester
Press every key and see at once which ones work.
- 100% free
- No sign-up
- Runs in your browser
Your keyboard
0 of 104 keys tested
Click here, then press keys. Each key lights up while held and stays marked once tested.
Last key pressed
- key
- —
- code
- —
- keyCode
- —
- location
- —
Next: Typing speed test · Click speed test · Mic test
Report a problem with this tool
How to use Keyboard tester
Click the keyboard
Click the tester so it can listen. Choose ISO if your keyboard has a tall Enter key.
Press every key
Each key lights up while you hold it and stays marked once tested. The counter shows how many you’ve covered.
Check the details
See the last key’s key, code, keyCode and location, and spot any key that never lights up.
Why use Utils365
Full-size layout
Function keys, navigation keys, arrows and the number pad, with ANSI and ISO layouts and left and right modifiers told apart.
Catches every key
Tab, Space, Backspace and the arrows are caught while the tester has focus, so they don’t scroll or leave the page.
For developers too
See event.key, event.code, keyCode and location for every press, handy when writing keyboard shortcuts.
Any language
Keys are matched by position, so AZERTY, QWERTZ and other layouts light up the right physical key.
Frequently asked questions
How do I test my keyboard?
Click the keyboard on the page, then press every key. Keys that work turn blue and stay marked. Any key that never lights up isn’t being registered.
Why doesn’t the Fn key light up?
Fn is handled inside the keyboard itself and never reaches the computer, so no website can detect it. The same goes for some brightness and media keys.
Can I test Print Screen and the Windows key?
Usually yes, though Windows or macOS may act on them first. Print Screen often only reports when it’s released, which the tester still records.
What is the difference between key and code?
event.key is the character typed, such as “q” or “a” on a French keyboard. event.code is the physical key, always “KeyQ” for that position whatever the layout.
How can I check for ghosting?
Hold several keys at once: each one held stays lit. If a key you’re holding doesn’t light, your keyboard can’t register that combination (many keyboards handle 6 or more keys).
How do I leave the tester?
Press Esc twice quickly, or click elsewhere on the page. Tab then moves around the page as usual.