Find out which keys work on a laptop or keyboard you just bought, cleaned or spilled tea on. Every key you press lights up on the map and stays marked once it works. The tool shows each key’s name and code, and how many keys are held at once, so you can check rollover and ghosting for gaming.
loading toolHow to test a keyboard
- Click or tap the keyboard area to start listening.
- Press every key; each one turns light blue once it works.
- Hold several keys together to test rollover; press Reset to start again.
Good to know
- Alt+Tab, the Windows key and some shortcuts may switch apps instead of being tested.
- Number-pad and extra keys appear in the list under the map.
Questions
What is key rollover?
How many keys a keyboard reports when pressed together. Hold several keys at once: if “Held right now” stops rising, you have reached your keyboard’s limit.
Some keys do nothing. Is the keyboard broken?
Keys like Fn, Print Screen or media keys are often handled by the system and never reach the browser. Test them in another program before deciding.
Is my data private?
Yes. Everything happens inside your own browser: nothing you type or choose is uploaded to us or anyone else.
Is it free?
Completely free, with no sign-up, no watermark and no limit on how many times you use it. Light ads keep the site running.
