Morse Code is a signal encoding method that uses sequences of on-off tones, lights, or clicks to represent letters, numbers, and punctuation. It was invented by Samuel Morse in 1836 for telegraph communication. "Dit" (dot) and "Dah" (dash) are the two basic signals of Morse code.

How are letters separated in Morse Code?

In standard Morse Code writing: dots and dashes within the same letter have no separator; letters are separated by spaces; words are separated by slashes (/) or three spaces. For example "SOS" is written as "... --- ...", and "HELLO WORLD" is written as ".... . .-.. .-.. --- / .-- --- .-. .-.. -..".

What does WPM speed mean?

WPM (Words Per Minute) is the speed unit for Morse code, representing the number of words transmitted per minute. A standard word is calculated as 5 characters. Higher WPM means shorter dot and dash durations. Beginners typically start at 5-10 WPM, while experienced operators can reach 20-30 WPM or higher.

How is the SOS distress signal composed?

SOS is the internationally recognized Morse code distress signal, consisting of three dots, three dashes, and three dots (... --- ...). SOS was chosen because its Morse code form is very easy to recognize and send. Note that SOS is not an abbreviation for any words — it is simply a signal sequence designed to be easy to remember and transmit.

Morse Code

Morse Code Encoder / Decoder

Text → Morse Code Morse Code → Text

Audio Speed: 15 WPM

Input Text

Morse Code Reference Table

A.-

B-...

C-.-.

D-..

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----.

Morse Code Converter Usage Guide

Main Features

Text Encoding — Convert text to Morse code
Code Decoding — Convert Morse code back to text
Audio Playback — Play code audio using Web Audio API
Speed Control — Supports 5-30 WPM speed adjustment

Use Cases

Learning Morse code communication
Amateur radio practice
Cryptography and fun exploration
Emergency communication knowledge

Morse Code

Morse Code Reference Table

Morse Code Converter Usage Guide

Main Features

Use Cases

常见问题

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