Greek Morse code assigns a dot-dash sequence to each of the 24 letters of the Greek alphabet. Because Greek and Latin share many sounds, several Greek letters reuse the Morse code of their Latin equivalent — for instance, alpha takes alef-style .- and tau takes -. This free tool encodes Greek text into Morse and decodes it back, instantly in your browser.
How it works
Encoding first normalises each character: accented vowels lose their accent and the final sigma ς becomes the regular sigma Σ. Each normalised letter is then looked up in a fixed table and replaced with its code. Letters within a word join with single spaces and words separate with three spaces. Digits and basic punctuation use the standard international Morse codes.
Decoding reverses the table: each space-separated code becomes its Greek letter, and three-space (or slash) gaps become word breaks. Tokens with no known mapping pass through unchanged.
The full Greek Morse alphabet
The 24-letter table has no gaps, but a handful of letters deserve attention:
| Greek letter | Name | Morse |
|---|---|---|
| Α | Alpha | .- |
| Γ | Gamma | --. |
| Δ | Delta | -.. |
| Θ | Theta | -.-. |
| Ξ | Xi | -..− |
| Φ | Phi | ..-. |
| Χ | Chi | ---- |
| Ψ | Psi | --.− |
| Ω | Omega | .-- |
Chi uses four dashes — the longest standard Greek code — while the common letters alpha, epsilon, and iota use codes identical to their Latin counterparts.
Example and notes
The word ΓΕΙΑ (hi) encodes letter by letter as:
--. . .. .-Distinctly Greek codes include theta -.-., xi -..-, psi --.-, and omega .--. Note that several Greek and Latin letters that look alike can map to different codes, so always use the Greek table for Greek text. Everything runs offline, so your text never leaves the page.
When to use Greek Morse
Greek Morse is used today primarily in amateur radio, historical telecommunications studies, and cryptography puzzles. Greek ham radio operators learn it for international contacts, and classics students encounter it in studies of 19th-century telegraph history when Greece had an extensive telegraph network. Because the encoding is fully reversible and standardised by the ITU, you can use it for simple text challenges, escape-room puzzles, or exercises in historical communication methods. For any modern secure communication, use cryptographic tools instead — Morse is not encryption.
Decoding tips
When decoding Greek Morse by hand, remember the spacing rules: a single space separates letters within a word, while three spaces (or a slash character) mark a word boundary. The two most confusing codes for newcomers are chi (----, four dashes) and eta (...., four dots), which look similar to the number codes for zero and five. Context usually resolves the ambiguity. If you are receiving live Morse and unsure whether a sequence is a digit or a letter, the surrounding context — whether the sender appears to be transmitting text or a number — is the best guide.