Key Rollover Test

Test the maximum number of simultaneous key presses your keyboard supports.

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Max Rollover Detected

Standard Keyboard

Currently Registered

Press and hold keys...

What is NKRO?

N-Key Rollover means every single key on the keyboard can be registered at the same time. Important for fast-paced gaming and professional typing.

About Key Rollover Test

Similar to ghosting, "Rollover" is the limit of keys you can press at once.

2KRO: Only 2 keys guaranteed.
6KRO: 6 keys (Common USB limit).
NKRO: Unlimited keys.

How to use

Smash both your palms on the keyboard. If you see less than 6 keys light up, you likely have a basic office keyboard that will hinder you in complex games like Fortnite or WoW.

Something not working right?

Found a bug or have a suggestion to improve the Key Rollover Test? Let us know and we'll fix it!