International Morse Code · ITU Standard · Est. 1865

Morse Code

Encode · Decode · Play audio · Full A-Z and 0-9 reference

Text to Morse
... --- ...
Copy to clipboard
Speed:
Morse to Text
Decoded text appears here...
A-Z Reference
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
--..
0-9 Reference
0
-----
1
.----
2
..---
3
...--
4
....-
5
.....
6
-....
7
--...
8
---..
9
----.
Rules and Timing
dot = 1 unit  ·  dash = 3 units  ·  Gap between signals = 1 unit  ·  Gap between letters = 3 units  ·  Gap between words = 7 units

SOS was adopted as the international distress signal in 1906 — chosen for simplicity, not as an abbreviation. Still valid on maritime and aviation frequencies.