· · · − − − · · ·  Reference Library

Morse Code Dictionary

The most complete free Morse code reference available. Search any letter, number, punctuation mark, or Morse pattern and hear the authentic tone instantly.

36Alphabet + Numbers
9Punctuation Marks
55+Phrases & Codes
600HzAudio Tone
A
Alpha
·−
B
Bravo
−···
C
Charlie
−·−·
D
Delta
−··
E
Echo
·
F
Foxtrot
··−·
G
Golf
−−·
H
Hotel
····
I
India
··
J
Juliet
·−−−
K
Kilo
−·−
L
Lima
·−··
M
Mike
−−
N
November
−·
O
Oscar
−−−
P
Papa
·−−·
Q
Quebec
−−·−
R
Romeo
·−·
S
Sierra
···
T
Tango
−
U
Uniform
··−
V
Victor
···−
W
Whiskey
·−−
X
X-ray
−··−
Y
Yankee
−·−−
Z
Zulu
−−··
0
Zero
−−−−−
1
One
·−−−−
2
Two
··−−−
3
Three
···−−
4
Four
····−
5
Five
·····
6
Six
−····
7
Seven
−−···
8
Eight
−−−··
9
Nine
−−−−·
.
Period
·−·−·−
,
Comma
−−··−−
?
Question
··−−··
/
Slash
−··−·
@
At Sign
·−−·−·
!
Exclamation
−·−·−−
:
Colon
−−−···
;
Semicolon
−·−·−·
-
Hyphen
−····−

Common Phrases

PhraseMorse CodeCategoryPlay

What Is a Morse Code Dictionary?

A Morse code dictionary is a comprehensive reference that maps every letter, digit, and punctuation mark to its unique dot-and-dash sequence — and allows the reverse lookup as well. Developed alongside the electric telegraph in the 1830s by Samuel Morse and Alfred Vail, Morse code was the world's first widely adopted digital communication system, encoding language as a series of timed electrical pulses.

Our dictionary goes beyond a simple chart. It includes the complete International Morse Code alphabet (A–Z), digits 0–9, nine punctuation marks, over 55 common phrases across five categories, ham radio Q-codes, and emergency signals — all with one-click audio playback at the standard 600 Hz tone used in amateur radio practice.

You can also perform reverse lookup by pattern: type any sequence of dots (.) and dashes (-) into the search box to instantly identify the character. This is especially useful when you receive a Morse signal and need to decode it character by character.

How Morse Code Works

Every Morse code character is built from two fundamental signals: a dot (·), a short pulse lasting one "unit" of time, and a dash (−), a longer pulse lasting three units. The spacing between symbols within a character is one unit. The gap between characters is three units, and the gap between words is seven units. This precise timing system is what allows trained operators to decode messages by ear at speed, without needing to look up a chart.

The most common letter in English is E, represented by a single dot (·) — the shortest possible signal. The least common, Z, requires four symbols (−−··). Numbers all use exactly five symbols each, making them immediately recognizable in a transmission.

How to Search This Dictionary

The search box accepts three types of input:

1. Letter or word search — type any letter (A–Z), digit, or a complete word like "hello" or "mayday". The grid filters to matching characters instantly.

2. Pattern search — type dots and dashes directly: .- finds A, ... finds S, ... --- ... finds the SOS emergency pattern. This reverse lookup is invaluable for decoding received signals.

3. Phonetic name search — type "alpha", "bravo", "charlie" and so on to find characters by their NATO phonetic alphabet name.

Use the filter buttons (Letters A–Z, Numbers 0–9, Punctuation) to narrow the grid, and the category tabs to switch between the alphabet view and phrase tables for common expressions, emergency signals, ham radio Q-codes, and love messages.

Audio Playback

Every card and phrase in this dictionary includes a ▶ play button that generates the authentic Morse tone using the Web Audio API. No audio files are downloaded — the tone is synthesized on demand at 600 Hz with a 70 ms unit duration, closely matching the standard used by CW (continuous wave) amateur radio operators. Clicking any card plays the complete character; clicking a phrase plays all characters in sequence with correct inter-character spacing.

Ham Radio Q-Codes — Complete Reference

Q-codes are three-letter abbreviations developed in the early 20th century to speed up radio-telegraph communication. They were first published by the British General Post Office in 1909 and later adopted internationally. Each Q-code is a complete message on its own — for example, "QTH?" asks "what is your location?" and "QTH Paris" replies "my location is Paris." They remain in active daily use by the global amateur (ham) radio community.

CodeMeaningUsed When
QRZWho is calling me?Asking for the identity of a station you can hear but not read clearly
QSLI acknowledge receiptConfirming a message has been received and understood
QTHMy location is…Stating your geographical position or asking for another station's location
QRMI am being interfered withReporting interference from other stations on the same frequency
QRNI am troubled by staticReporting atmospheric noise or electrical interference
QROIncrease transmitter powerAsking the other station to boost their output, or stating you are doing so
QRPReduce transmitter powerAsking the other station to reduce power; also the entire low-power operating movement
QSOI can communicate with…Referring to a two-way contact or communication session
QSYChange frequencyInstructing a station to move to a different transmission frequency
73Best regardsUniversal ham radio farewell, sent at the end of every contact
88Love and kissesSent between operators who know each other personally
CQCalling all stationsGeneral call to any station listening; "CQ CQ CQ" is the standard opening
DEFrom / This isIdentifies the sending station: "DE W1ABC" means "this is W1ABC"
AREnd of transmissionSignals the end of a message, inviting a reply
SKEnd of contactSignals the end of a complete two-way exchange; signing off

History of Morse Code

Morse code transformed long-distance communication for over a century before digital networks took over. Understanding its history helps explain why the code is structured the way it is — and why it still matters today.

1830s
Samuel Morse and Alfred Vail develop the first version of Morse code alongside the electric telegraph. The original "American Morse Code" differs from the international version used today, with more complex dashes and internal spaces.
1844
The first commercial telegraph message is sent: "What hath God wrought" — transmitted in Morse code from Washington D.C. to Baltimore. Morse code becomes commercially operational for the first time.
1865
The International Telegraphy Congress in Paris standardizes a continental version of Morse code. This International Morse Code eliminates the internal-space characters and simplifies the system into the pure dot-and-dash code used worldwide today.
1906
The International Radiotelegraph Convention in Berlin establishes SOS (· · · − − − · · ·) as the universal maritime distress signal, replacing earlier inconsistent signals. SOS is chosen purely for its unmistakable symmetry, not as an acronym.
1912
The sinking of the RMS Titanic demonstrates the life-saving importance of Morse code at sea. Radio operators transmit SOS signals that bring rescue ships to the area. The event leads directly to new international regulations requiring ships to maintain a continuous radio watch.
1997
The Global Maritime Distress and Safety System (GMDSS) replaces the mandatory Morse code requirement for sea-going vessels. The ITU officially retires Morse as the international maritime distress standard — though it remains actively used by amateur radio operators worldwide.
Today
Over 3 million licensed amateur radio operators worldwide continue to use Morse code voluntarily. Organizations like the ARRL and CW Academy actively train new operators. Morse code also finds modern use in accessibility technology, allowing people with severe motor disabilities to communicate using eye blinks or single-switch inputs.

Tips for Learning Morse Code

Morse code is a skill, not just a reference table. Most experienced operators learn to recognize characters by their sound pattern — the "rhythm" of dots and dashes — rather than consciously translating symbols. Here are proven techniques for reaching that level of fluency:

Start with the Koch Method

The Koch method, developed by German psychologist Ludwig Koch, is the most effective way to learn Morse code for audio reception. You start at full speed (typically 20 WPM) but with only two characters — K and M. Once you can copy those at 90% accuracy, you add a third character, then a fourth, and so on until you know the full alphabet. This trains your brain to hear characters as complete sounds rather than counting individual dots and dashes.

Use the Farnsworth Method for Beginners

The Farnsworth method sends each character at full speed (e.g. 18–20 WPM) but increases the inter-character and inter-word spacing to give beginners time to think. This prevents the habit of counting at slow speeds — a habit that becomes a ceiling you later have to break through. Our virtual keyboard and Morse game let you practice at adjustable speeds.

Learn High-Frequency Letters First

In English text, the letters E, T, A, O, I, N, S, H, and R make up roughly 70% of all characters. Mastering these nine letters first means you can decode most common words. Notice that E (·) and T (−) are the simplest codes — single symbols — reflecting the frequency-based design philosophy behind Morse code's structure.

Use Mnemonics for Tricky Characters

Some operators find sound-alike mnemonics helpful. The letter F (..-.) sounds like "di-di-dah-dit" — some remember it as "find the dot." The letter V (...-) is famous as the rhythm of the opening bars of Beethoven's Fifth Symphony. Build your own associations that stick in your memory. Our flashcard tool randomizes characters to help break pattern recognition.

Did you know? The word "PARIS" is the standard measure for Morse code speed. One word per minute (WPM) is defined as transmitting "PARIS" once per minute, because it has exactly 50 "units" of timing when sent correctly — making it a reliable benchmark for both sending and receiving speed tests.

Common Morse Code Phrases and Their Meanings

Beyond individual characters, Morse code has a rich vocabulary of common phrases, procedure words (prosigns), and conventional expressions used by operators worldwide. Here are the most important ones to know:

Procedure Signals (Prosigns)

Prosigns are special symbols formed by combining two letters without the normal inter-character space. They serve as punctuation and procedure markers in radio transmissions.

ProsignCodeMeaning
AR·−·−·End of message — invites reply from any station
AS·−···Wait — please stand by
BK−···−·−Break — invitation to transmit
BT−···−Break (text separator) — new paragraph
CL−·−··−··Closing — going off the air
KN−·−−·Over — reply invited from named station only
SK···−·−End of contact — signing off
SN / VE···−·Understood / verified