Keyboard Test & Key Rollover Checker
Test your hardware with this interactive keyboard test. Verify every key, check key rollover test limits, and detect keyboard ghosting in real time.
keyboard test key rollover test keyboard ghosting
Keyboard Options
Displays sequence of recently pressed keys
Measures duration in ms between keydown and keyup
Toggle dedicated numeric keypad on right
Blocks browser default actions for F1-F12, Tab, and Alt
Test mouse clicks, scroll wheel, and trackpad gestures
Test volume, media playback, and launcher keys
Last Key
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Code
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KeyCode
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Hold Time
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Rollover & Ghosting Status
Press any key on your keyboard to begin testing...
Multimedia & System Keys
Touchpad & Mouse Tester
X: 0px, Y: 0px
Trackpad Surface (Move, Tap, or Multi-Touch Swipe)
Back (M4)0
Forward (M5)0
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0 px
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Last Key
About This Assessment
Key rollover determines how many simultaneous key presses your keyboard can register without dropping inputs. Standard keyboards feature 6-Key Rollover (6KRO), while gaming and mechanical keyboards feature full N-Key Rollover (NKRO).
Press any key on your physical keyboard to verify its response. Test multiple keys simultaneously to gauge maximum key rollover (NKRO). Use the options panel to toggle switch sounds, layouts, and browser shortcut interception.