A keyboard tester drawn in Colemak: the same board as QWERTY with 17 relocated keys.
Colemak·ANSI
Esc
F1
F2
F3
F4
F5
F6
F7
F8
F9
F10
F11
F12
PrtSc
ScrLk
Pause
F13
F14
F15
F16
F17
F18
F19
~
`
!
1
@
2
#
3
$
4
%
5
^
6
&
7
*
8
(
9
)
0
_
-
+
=
Backspace
Tab
Q
W
F
P
G
J
L
U
Y
:
;
{
[
}
]
|
\
Backspace
A
R
S
T
D
H
N
E
I
O
"
'
Enter
Shift
Z
X
C
V
B
K
M
<
,
>
.
?
/
Shift
Ctrl
Alt
Alt
Ctrl
Ins
fn
Home
Page
Up
Delete
End
Page
Down
Num
Lock
clear
=
/
*
-
7
8
9
+
-
4
5
6
+
1
2
3
Enter
0
.
| Position | US QWERTY | Colemak |
|---|---|---|
| E key | E | F |
| R key | R | P |
| T key | T | G |
| Y key | Y | J |
| U key | U | L |
| I key | I | U |
| O key | O | Y |
| P key | P | ;: |
| S key | S | R |
| D key | D | S |
| F key | F | T |
| G key | G | D |
| J key | J | N |
| K key | K | E |
| L key | L | I |
| ; key | ;: | O |
| N key | N | K |
Colemak keeps Q, W, A, Z, X, C, V and most punctuation where QWERTY puts them, so shortcuts like Ctrl+Z/X/C/V stay in place. Seventeen keys move: the home row becomes A R S T D H N E I O, F and P go to the top row, and the semicolon swaps with P. Caps Lock is remapped to Backspace, which is why this page labels it that way. The physical board is a standard ANSI layout.
Because the tester tracks physical keys, it does not matter whether Colemak is active on your computer right now. The key printed R here is the switch QWERTY labels S; pressing it lights the same key. Go row by row and confirm every cap shows a press count of exactly one per tap. If you use Colemak-DH, the bottom row differs slightly (D and H move down); the switches you are testing are still the same.
Test Caps Lock deliberately. Colemak users hit it constantly as Backspace, so it is often the first switch to wear out on a heavily used board. Also try holding several letters at once (for example N, E and I) to make sure fast rolls on the home row are not dropped by the keyboard’s rollover limit.