International Morse

Morse Code Translator

Use this Morse Code Translator to convert English text into International Morse code or decode dots and dashes back into supported letters, digits, and punctuation. Conversion runs locally, while unsupported characters or unknown code groups remain visible instead of being guessed or silently removed.

Example · replace with your text.
3 / 500

Morse

3 characters converted.

Try an example

International Morse · local.

How to use

  1. Choose Text → Morse or Morse → Text.

  2. Type letters or paste dots and dashes (spaces between letters; " / " between words).

  3. Copy the exact result when conversion succeeds.

How this Morse code translator encodes dots and dashes

A Morse code translator assigns every letter and digit a unique sequence of short and long signals, written as dots and dashes. On the air the timing is strict: a dash lasts three times as long as a dot, elements within a letter are separated by one dot-length of silence, letters by three, and words by seven. In written form those silences become spacing conventions — this page separates letters with a single space and words with " / " (space-slash-space), which is the most common text convention.

The mapping is the International Morse code standardized by the ITU (recommendation M.1677-1). It is a published encoding, not a cipher: there is no key, and anyone with the chart can read a message. Samuel Morse and Alfred Vail designed the code around English letter frequency, so the most common letters get the shortest codes — E is a single dot, T a single dash — while rarer letters like Q and J take four elements. That frequency ordering is why experienced operators can send English text remarkably fast.

This workspace works on the text representation of Morse rather than audio or light signals. Encoding is a deterministic lookup from character to code group; decoding reverses it after normalizing lookalike characters such as the middle dot (·) and various dash characters to ASCII "." and "-". Characters outside the published mapping are kept visible and marked unavailable instead of being guessed.

Use it when you need a readable text form of a callsign, a puzzle clue, or a practice drill—not when you need on-air timing, sidetone, or a keyed transmitter. Audio playback is not in this version, so you cannot learn rhythm from the page itself. Copy the dots and dashes into a notebook, a radio logger, or another tool that speaks the timing. If a pasted group uses middle dots or typographic dashes, decode still normalizes them; if a group is not in the published chart, the result keeps it visible instead of inventing a letter.

People also arrive from trivia about SOS and amateur-radio shorthand such as 73. Those patterns are public encodings, not secret keys. Keep anything confidential in real encryption; Morse only changes how letters are written. For a name or a short English phrase, encode, copy, and paste. For a wall of unknown dots, decode and read the unsupported marks. Either direction stays in your browser.

Prosigns and procedural signs used on the air are mostly outside this text subset. SOS is included because it is three letters people actually type. SK, AR, and other run-together prosigns are not special-cased; type the letters if you need the equivalent dots. Punctuation coverage is a small published subset, not every typographic dash or quote. If a mark stays in the result with an unavailable tag, it was never in ITU M.1677-1 as implemented here.

Decode is strict after normalization. Extra spaces become longer gaps; a single misplaced slash can split a word. If a group does not match a letter, you will see it rather than a guessed character. That is slower to read and much safer for callsigns. Encode never invents a code for emoji or CJK; those characters stay visible as themselves so you know they did not travel as Morse.

Practice on paper still uses the same chart. Write a callsign, encode it, then decode the copy without looking at the letters. Farnsworth spacing (longer gaps between letters than the element speed would suggest) is a teaching trick on the air; this text page cannot demonstrate it because there is no sidetone. If you are studying for a CW privilege, use a keyed trainer for rhythm and this chart for spelling. A notebook of missed letters beats a screenshot of a green result pane.

Numbers zero through nine are five-element groups. Punctuation is a published subset: period, comma, question mark, and a few others depending on the table you learned. This implementation follows the same small set the converter documents in coverage, not every typographic dash Unicode can draw. If you paste an em dash, decode will not treat it as Morse until it has been normalized to ASCII hyphen-minus. That normalization is why mixed documents still round-trip more often than they look like they should.

Where Morse code is still used

Morse code is nearly two centuries old, but it never fully disappeared. A few places you will still meet it today:

FAQ

Which Morse standard is this?
International Morse codes for A–Z, 0–9, and a small punctuation subset. Audio playback is not included in this version.
How are letters and words spaced?
Letters are separated by a single space. Words use " / " (space-slash-space) or multiple spaces when decoding.
Can I paste · and − characters?
Yes. Decode normalizes middle dots and various dash characters to ASCII "." and "-" before lookup.
Does conversion run locally?
Yes. Mapping runs in your browser; text is not uploaded for conversion.
What happens to unsupported characters or Morse groups?
LiteralKit keeps them in the result and marks them unavailable. It does not guess a letter, drop the input, or claim coverage outside the published mapping.
Is Morse code a form of encryption?
No. Morse is a published encoding with no secret key — anyone with the chart can read it. If you need confidentiality, use real encryption; Morse only changes how letters are represented, not who can read them.
Why does E have the shortest code?
The designers ordered codes by how often letters appear in English text, so the commonest letters transmit fastest. E is a single dot and T a single dash; uncommon letters like Q and J take four elements.
What do SOS and 73 actually mean?
SOS (···−−−···) is the international distress signal — it abbreviates nothing; the pattern was chosen because it is unmistakable. 73 is an amateur-radio abbreviation meaning "best regards", a leftover of 19th-century telegraph shorthand.

See also

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