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Morse code translator
Letters/numbers become Morse; dots and dashes become text
Morse alphabet
| Letter | Code | Letter | Code |
|---|---|---|---|
| 0 | ----- | D | -.. |
| 1 | .---- | E | . |
| 2 | ..--- | F | ..-. |
| 3 | ...-- | G | --. |
| 4 | ....- | H | .... |
| 5 | ..... | I | .. |
| 6 | -.... | J | .--- |
| 7 | --... | K | -.- |
| 8 | ---.. | L | .-.. |
| 9 | ----. | M | -- |
| A | .- | N | -. |
| B | -... | O | --- |
| C | -.-. | P | .--. |
The code that outlived two centuries
Created in the 1830s for Samuel Morse's telegraph, the code survives because it is the most robust ever devised: you can send it with light, sound, radio or eye blinks. The most common English letters got the shortest codes (E = single dot, T = single dash): statistical compression a century before information theory. SOS (dot dot dot, dash dash dash, dot dot dot) was chosen in 1906 not for meaning anything but for being unmistakable. Timing rule: dash = 3 dots; gap between letters = 3 dots; between words = 7. Ham radio operators still use it, and it is why "CQD" lost to "SOS" on the Titanic.
Last updated: · Methodology and sources