Ghosting & N-Key Rollover Test
Press multiple keys simultaneously to discover your keyboard’s rollover limit and spot ghosting issues.
1. Press keys at once to test rollover.
2. Use the Test Common Combos buttons to check for ghosting (watch the warning area).
3. Ghosted keys – if any – will appear in red below the warning.
4. The max-key count shows your keyboard’s NKRO limit.
5. Click Export Results for a CSV summary.
Test Common Combos
Key Combination History
- No combinations recorded yet.
What Do These Results Mean?
N-Key Rollover (NKRO): How many keys your keyboard can register at once. Higher is better for gaming.
Ghosting: When certain simultaneous keypresses don’t register. Use the combo buttons above; any ghosted keys appear in red.
Example: If asked for W+A+S+Space but Space doesn’t show, it will be listed as ghosted.
Why Ghosting & N-Key Rollover Still Matter in 2025
Ghosting happens when you press a perfectly working key and nothing shows on screen because the keyboard’s internal matrix has run out of unique combinations …