Which Morse standard does this use?

It uses International Morse code, also called ITU Morse, which covers the 26 Latin letters, the digits 0 to 9, and common punctuation. This is the variant used worldwide in amateur radio and aviation.

How should I format Morse for decoding?

Separate the dots and dashes of each letter with a single space, and separate words with a forward slash, for example ... --- ... for SOS, or .... .. for HI. The decoder treats a slash as a word break.

How does the audio timing work?

Audio follows standard Morse timing where a dash lasts three times a dot, the gap between symbols in a letter is one dot, the gap between letters is three dots, and the gap between words is seven dots. The tone is a 600 Hz sine wave played through the Web Audio API.

Why do some characters not convert?

Only characters in the International Morse table have an encoding. Unsupported symbols are skipped when encoding, and unrecognised Morse groups decode to a question mark so you can spot the problem.

Does this work offline?

Yes. The Morse table, conversion, and audio synthesis all run in your browser with no network calls, so it works fully offline.

Morse Code Generator

This tool translates text into International Morse code and back, shows the result as clean dots and dashes, and can beep it aloud through your speakers. It is built for learning the code, sending quick puzzle messages, and practising the rhythm that makes Morse readable by ear.

How it works

Encoding looks up each character in the International Morse table — E is a single dot, T a single dash, S is ..., and so on. Letters are joined with a single space and words are separated by a forward slash so the output is unambiguous. Decoding reverses the lookup: it splits on slashes to recover words, splits each word on spaces to recover letters, and maps every dot-dash group back to its character.

Audio playback uses the Web Audio API and follows standard Morse timing:

A dash is three times the length of a dot.
Symbols within a letter are separated by one dot length.
Letters are separated by three dot lengths and words by seven.

Each tone is a short 600 Hz sine burst with a smooth envelope so it sounds like a real key.

Tips and notes

The classic distress signal SOS encodes to ... --- ... — try it to hear the timing.
When decoding, mind the spacing: one space between letters, a slash with spaces around it between words.
Audio requires a user gesture to start (the Play button), which is why it will not auto-play.