Keyboard Tester
Press keys to see them light up and watch how many register simultaneously. Useful for spotting dead keys and measuring key rollover (NKRO) on a new or worn board.
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Backspace
Tab
Q
W
E
R
T
Y
U
I
O
P
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Caps
A
S
D
F
G
H
J
K
L
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Enter
Shift
Z
X
C
V
B
N
M
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Shift
Ctrl
Win
Alt
Alt
Fn
Menu
Ctrl
Keys held: 0 (higher = better rollover / NKRO)