Telegraph Key
Hold the spacebar (or press and hold the key below) to send Morse — a short tap for a dot, a longer hold for a dash. Real operators on the Civil War-era U.S. Military Telegraph worked American ("Railroad") Morse; International Morse is the more familiar, standardized code most people picture today.
Best experienced on a larger screen — on a phone you may need to scroll between the key and the cheat sheet below.
Your current pace: dot ≈ 150ms · dash ≈ 450ms
Auto-calibrates to your rhythm as you send — hold a little longer for a clean dash.
Live decode
Morse Cheat Sheet
A
•–
B
–•••
C
–•–•
D
–••
E
•
F
••–•
G
––•
H
••••
I
••
J
•–––
K
–•–
L
•–••
M
––
N
–•
O
–––
P
•––•
Q
––•–
R
•–•
S
•••
T
–
U
••–
V
•••–
W
•––
X
–••–
Y
–•––
Z
––••
0
–––––
1
•––––
2
••–––
3
•••––
4
••••–
5
•••••
6
–••••
7
––•••
8
–––••
9
––––•
.
•–•–•–
,
––••––
?
••––••