Morse Code Alphabet: A–Z Letters, Numbers & Symbols

Explore the International Morse Code Alphabet

The Morse code alphabet represents the 26 basic English letters with combinations of dots and dashes. The wider International Morse Code system also includes numbers, punctuation, and other signals.

Here is the complete A–Z reference:

These character mappings follow International Morse Code as specified by the International Telecommunication Union (ITU-R Recommendation M.1677-1 ).

If you only need one letter, use the table as a quick reference. If you are learning Morse code, listen to each character and practice recognizing its complete rhythm.

For example:

• A = .-
• B = -...
• C = -.-.
• S = ...
• T = -

You can also enter a Morse pattern into a translator to find the character it represents. For example, .-.. is L.

The Morse Code Alphabet (A–Z)

Morse code does not use the same number of signals for every letter.

Some characters are very short:

• E = .
• T = -
• I = ..
• M = --

Others contain longer patterns:

• H = ....
• J = .---
• Q = --.-
• Z = --..

This structure gives you useful patterns to remember instead of treating all 26 letters as unrelated codes.

Morse code also does not have separate patterns for uppercase and lowercase letters. A and a use the same Morse code: .-

The basic relationship is:

Letter → Morse pattern → sound

For example:

• A → .-
• N → -.

These two characters use the same two elements in reverse order.

How the Morse Code Alphabet Works

Morse code represents characters with short and long signals.

A dot is the short signal.

A dash is the long signal.

In spoken Morse terminology, a dot is commonly called a dit, while a dash is called a dah. A dash lasts three times as long as a dot under standard timing. It is not a louder signal. It is a longer signal.

Morse code can be sent through sound, light, or other timed signals. It is best described as an encoding and signaling system rather than a spoken language.

Dots and dashes use fixed timing units

Timing is an essential part of Morse code.

Under standard Morse timing:

• A dot lasts 1 unit.
• A dash lasts 3 units.
• The gap between elements inside one character is 1 unit.
• The gap between characters is 3 units.
• The gap between words is 7 units.

ARRL documents this 1-3-1-3-7 timing structure and uses the standard PARIS word for Morse speed calculations.

For example: .- represents A.

The dot and dash are separated by a one-unit gap. That gap is part of the timing pattern.

Morse code therefore uses both signals and silence. The pauses help the listener separate elements, letters, and words.

Hear each character as one rhythm

A common beginner mistake is to count every dot and dash.

That can help when checking a written chart, but it is not the best long-term way to recognize Morse by sound.

For example: ... should eventually sound like S without requiring you to think: dot + dot + dot = S.

The goal is to hear the complete character as one rhythm.

This becomes more important as Morse speed increases. ARRL learning material emphasizes sound-based character recognition rather than relying only on visual dots and dashes.

If your goal is to learn Morse for listening, use the audio controls in your Morse Code Translator and practice recognizing characters before looking at the answer.

Letters and words need longer gaps

Morse code uses different lengths of silence to separate its parts.

Consider: ... --- ...

This contains three characters:

• ... = S
• --- = O
• ... = S

The gap inside one character is short.

The gap between letters is longer.

The gap between words is longer still.

This timing is part of the code. If the spacing is wrong, separate characters can run together and become difficult to recognize.

Numbers 0–9

International Morse Code also includes ten digits.

The numbers have a useful pattern.

Start with: 5 = .....

Moving toward 0 adds dashes:

• 4 = ....-
• 3 = ...--
• 2 = ..---
• 1 = .----
• 0 = -----

The pattern then continues from 5 toward 9:

• 6 = -....
• 7 = --...
• 8 = ---..
• 9 = ----.

This makes the digits easier to learn as a group.

For a dedicated reference, see Morse Code Numbers.

Punctuation & Prosigns

Morse code is not limited to letters and numbers. International Morse Code also defines punctuation and other signals.

Common punctuation includes:

A prosign is a special Morse signal used as one operational unit. It can represent a procedure or communication instruction rather than an ordinary letter.

For example, AR is commonly represented as: .-.-.

The exact use of special signals depends on the communication context. The ITU specification provides the formal International Morse character and operational provisions.

For a broader reference, see Morse Code Symbols.

Useful Patterns in Letters and Numbers

You do not need to memorize all 26 letters as unrelated codes. Morse code has several patterns that make learning easier.

E and T are the roots

The two shortest Morse letters are:

• E = .
• T = -

These provide a simple starting point for understanding other characters.

For example:

Dot family

• E = .
• I = ..
• S = ...
• H = ....

Dash family

• T = -
• M = --
• O = ---

Other characters branch from these basic patterns. This gives you a logical way to learn the alphabet instead of memorizing 26 separate facts.

Numbers progress in order

The number pattern is easiest to learn from 5: 5 = .....

Then: 4 = ....-, 3 = ...--, 2 = ..---, 1 = .----, 0 = -----.

The other side is: 6 = -...., 7 = --..., 8 = ---.., 9 = ----..

Once 5 is familiar, the other digits become easier to reconstruct.

Six through nine reverse the balance

The digits 6 through 9 begin with an increasing number of dashes.

This creates a simple visual and audio pattern.

Why Some Letters Are Shorter Than Others

Morse characters have different lengths.

For example: E = . contains one signal element.

J = .--- contains four signal elements.

Under standard timing, J, Q, and Y are among the longest English letters by total signal duration. Their four elements contain a combination of dots, dashes, and internal gaps that makes them longer to transmit than short characters such as E or T.

The important learning point is that you should eventually recognize a character as a complete rhythm instead of calculating its individual elements.

It is also important not to assume that Morse character length follows a perfect modern English-frequency ranking. Historical Morse systems developed over time, and International Morse differs from the earliest American Morse assignments.

Practical consequence

When you first learn Morse code, you may see .- and think: dot + dash = A.

With practice, you want to hear the pattern and immediately recognize: A.

That is why audio practice is important. It helps you move from visual decoding to direct sound recognition.

How to Learn the Morse Code Alphabet

Learning all 26 letters at once can feel difficult. A better approach is to learn small groups and build connections between them.

Listen → Identify → Check → Repeat

Use the chart when you need a reference. Use audio when you want to build real recognition.

Learn by sound, never by sight

A written chart is useful, but visual recognition is different from hearing Morse code.

If your goal is to understand Morse by sound, spend time listening to individual characters. For example, learn .- as the sound of A.

Then try to identify A without looking at the answer. Do the same with other characters. The long-term goal is direct recognition rather than counting individual dots and dashes.

Start with E, T, A and N

A simple starting group is:

• E = .
• T = -
• A = .-
• N = -.

A and N are useful because they are mirror patterns: A = .- and N = -..

You can also learn other useful mirror pairs:

Learning related pairs can make the alphabet easier to organize in memory.

Add letters in small groups and drill to instant recognition

Do not try to master all 26 letters in one session. Start with a small group. Listen to the characters in random order. Identify each one. Then check your answer.

A simple practice cycle is:

1. Listen to a character.
2. Identify the letter.
3. Check the answer.
4. Repeat missed characters.
5. Add a few new characters.

The goal is quick recognition rather than slow counting. The same principle is used in established Morse learning methods: introduce characters gradually and build fast recognition through repeated listening.

Use rhythm mnemonics only as a temporary crutch

Mnemonics can help you remember difficult characters, but they should not replace direct recognition. If you always translate a sound into a memory phrase before identifying the letter, your recognition may remain slow.

Use a mnemonic when needed. Then work toward recognizing the actual Morse rhythm.

Practice sending as well as receiving

Receiving means listening to Morse and identifying the characters.

Sending means producing the correct dots, dashes, and spaces.

Sending practice helps you understand timing. You learn how long a dot should last and how a dash differs from a dot. You also become more aware of the spaces between elements, letters, and words.

Keep sessions short and daily

Regular practice is easier to maintain than occasional long sessions.

A short session can include:

• Review a small character group.
• Listen to random characters.
• Identify them.
• Send the same characters.
• Review mistakes.
• Repeat the next day.

Measure progress by recognition speed and accuracy, not just by how many codes you can memorize.

Practicing Timing Across the Whole Alphabet

Once you know the characters, timing becomes an important part of practical Morse skills.

Standard timing uses:

ARRL documents this timing structure and uses the PARIS standard for Morse speed calculations.

The approximate duration of one timing unit can be calculated as: 1.2 ÷ WPM

At 20 WPM: 1.2 ÷ 20 = 0.06 seconds

So a standard-timing dot is 60 milliseconds.

A dash is 180 milliseconds.

The gap between characters is also 180 milliseconds.

The gap between words is 420 milliseconds.

These values assume standard timing. Training systems can change the spacing while keeping the individual character timing faster.

Farnsworth timing

Farnsworth timing is designed to make Morse learning easier.

Characters are sent at a faster character speed, while additional space is added between characters and words.

This gives the learner more time to identify each character.

ARRL describes Farnsworth timing as faster character timing combined with additional spacing to produce a slower overall rate.

For example, a learner can practice characters at a faster speed while using extra spacing between them. The exact settings can vary between training tools.

Putting the Alphabet Together

Once you know individual letters, start combining them into words.

For example:

• HI → .... ..
• OK → --- -.-
• SOS → ... --- ...
• HELLO → .... . .-.. .-.. ---
• MORSE → -- --- .-. ... .
• CODE → -.-. --- -.. .

Each letter has its own pattern. The spaces separate the characters. Longer spaces separate words.

For written Morse, keep the elements of each character together. For example: .... means H. Writing it as . . . . could be interpreted as four separate E characters.

When writing complete messages, use spaces between letters and a clear word separator between words. A slash is often used as a written word separator:

-- --- .-. ... . / -.-. --- -.. .

This reads: MORSE CODE

Reverse lookup

Morse code is not always entered as normal text. Sometimes you already have a pattern and need to identify it.

For example: .-.. means L. Likewise: -.- means K.

A reverse Morse lookup is useful for puzzles, radio practice, notes, and any situation where the Morse pattern is already available.

You can paste a complete Morse message into the Morse Code Translator to decode it into readable text.

Why Learn the Alphabet Rather Than a Few Words

Memorizing a few Morse phrases can be useful, but learning the alphabet gives you a much wider skill.

If you know only SOS, you can recognize SOS. If you know the alphabet, you can decode words you have never seen before.

It is the only way to read anything unfamiliar

Consider: .... . .-.. .-.. ---

You can decode it one character at a time:

• .... = H
• . = E
• .-.. = L
• .-.. = L
• --- = O

The result is: HELLO. You did not need to memorize the entire message. You only needed to know the alphabet.

It was a licensing requirement for most of a century

Morse code played an important role in radio communication for many decades. In the United States, Morse proficiency was once required for certain amateur radio license classes.

The FCC ended the Morse examination requirement for US amateur radio licenses on February 23, 2007. Morse remains an active operating mode in amateur radio (arrl.org ).

It trains auditory pattern recognition

Morse can be written as dots and dashes, but audio practice trains you to recognize characters by their rhythm.

For example: ... can eventually become an immediate sound pattern for S. This changes the task from counting signals to recognizing a character. That is why audio practice is useful for learners who want to move beyond a visual Morse chart.

Where the Alphabet Is Actually Used Today

Morse code is not the main communication system it once was. Modern digital systems handle most communication needs. Morse code still has a place in amateur radio and other specialized contexts.

The ITU states that International Morse code continues to be used in some radiocommunication services, including amateur and amateur-satellite services.

Today, people may use or study Morse code for:

• Amateur radio
• CW communication
• Amateur-satellite activities
• Morse code training
• Educational projects
• Historical communication study
• Scouting and hobby activities
• Puzzles and games
• Creative messages
• Light and sound signaling projects

For most beginners today, Morse is a skill to learn and practice rather than a replacement for modern digital communication. It is also important not to overstate modern use. Morse code should not be presented as the standard communication system for today's military, aviation, or maritime services.

How This Page Is Verified

Accuracy matters when a page is used as a Morse code reference.

The letter and number mappings on this page follow International Morse Code. The primary technical reference is ITU-R Recommendation M.1677-1: International Morse code, which the ITU currently lists as an in-force recommendation.

The timing information is cross-checked against established ARRL Morse timing guidance.

That guidance defines:

• One unit for a dot
• Three units for a dash
• One unit between elements
• Three units between characters
• Seven units between words

It also documents the PARIS timing standard and Farnsworth timing.

This page uses International Morse Code for its primary A–Z reference. That distinction matters because historical Morse systems, including American Morse, used different character assignments.

The purpose of this page is to provide a clear reference for people who want to find, learn, hear, practice, or translate International Morse code.

Complete Morse Code Alphabet Chart

Use these tables when you need a quick Morse code reference.

Letters in Morse Code

These are the 26 basic English letters represented in International Morse Code.

Some useful quick references are:

• A = .-
• J = .---
• L = .-..
• S = ...
• T = -
• Z = --..

If you want to hear a character, use the audio function in the Morse Code Translator.

Numbers in Morse Code

Start with 5 = ..... when learning the number pattern. Then build toward 0 and 9.

For the complete digit guide, see Morse Code Numbers.

Punctuation in Morse Code

International Morse includes additional characters and operational signals. For specialized communication, use the applicable ITU specification rather than relying on a generic online chart.

For more punctuation and symbol information, see Morse Code Symbols.

Frequently Asked Questions