Online Morse Code Decoder

Encode and decode International Morse code

Morse code represents letters, digits and common signs with short and long signals, written as dots and dashes. A space separates letters and a slash commonly separates words.

Audio playback

After encoding, the options can play the result and adjust signal speed and frequency. Durations follow the standard ratios between a dot, dash, letter gap and word gap.

Prosigns and unknown characters

Common prosigns <SOS>, <AR>, <SK> and <BT> are recognized. Unsupported characters or sequences are reported so the output is not silently incomplete.

Historical context

Developed in the nineteenth century for telegraphy, Morse remains in use among radio amateurs, in some distress signals and as a way to learn coded communications. It is a code, not secure encryption.