Morse code represents letters and digits as sequences of short and long signals — dots and dashes — originally designed for telegraph transmission over a century ago. Each letter is a unique combination, individual letters within a word are separated by a single space, and whole words are separated by a slash. This tool translates plain text into Morse code and decodes Morse code back into readable text, using the standard international Morse alphabet, entirely in your browser with no data leaving your device.
Each letter's dots and dashes are separated by a single space. A forward slash surrounded by spaces ( / ) marks the boundary between words, matching the standard way Morse is written as text.
Input is automatically converted to uppercase before encoding since Morse code makes no case distinction. Only letters A–Z and digits 0–9 are mapped; unsupported characters are simply dropped from the encoded output.
SOS became the international distress signal because its pattern — three dots, three dashes, three dots — is simple, symmetrical, and impossible to mistake for anything else, even under poor signal conditions.