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Multi-Key Test

Test your speed and accuracy with multiple keys. Select keys below and press them as fast as you can!

Press keys to add (WASD, arrows, etc):

(Click and press keys, e.g. W, A, S, D)

Multi Key Test – N-Key Rollover & Anti-Ghosting Checker

The Multi Key Test lets you press multiple keys simultaneously and verifies that every key is correctly detected by your browser and operating system. This test is crucial for gamers who need to verify their keyboard's N-Key Rollover (NKRO) and anti-ghosting capabilities, which ensure no key presses are missed during complex gaming maneuvers.

Key Features

✓Detects and displays all simultaneously pressed keys
✓Identifies keyboard ghosting and lost key presses
✓Tests N-Key Rollover (NKRO) capability
✓Real-time key state visualization
✓Works with any USB or Bluetooth keyboard
✓Shows key codes for technical debugging

How to Use

1Press any combination of keys simultaneously.
2Detected keys are shown in real-time on screen.
3Press WASD + Space + Shift all at once to simulate gaming input.
4If any key is missing from the display, your keyboard may have ghosting on that combination.
5Compare results across different key combinations to map your keyboard's rollover limits.

💡 Pro Tips to Improve Your Score

→Most gaming keyboards advertise NKRO or at least 6-key rollover — use this test to verify those claims.
→Common ghosting patterns: many budget keyboards fail at 3+ simultaneous keys on specific combinations.
→USB keyboards default to 6-key rollover; true NKRO requires either HID NKRO mode or a PS/2 connection.
→If keys are missed, try switching USB ports or enabling NKRO mode in your keyboard's software.
→Wireless keyboards sometimes have additional input lag — test latency with our Reaction Time Test.

Frequently Asked Questions

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