Morse code translator

Convert letters A–Z and digits 0–9 to Morse code and back locally.

How to use

1. Conversion direction
2. Input
3. Convert

Represent letters and digits in Morse code

Text input accepts only ASCII letters A–Z, digits 0–9 and whitespace; lowercase is accepted. Accented letters, other alphabets, punctuation and procedural signals are unsupported. The entire raw text input is limited to 1000 characters before trimming. Leading and trailing whitespace is removed; repeated whitespace becomes one word separator. For Morse input, use ASCII dots (.) and hyphens (-); separate letter codes with spaces and words with /. Spaces around the slash are optional. Raw Morse input is limited to 6000 characters and decoded text to 1000 characters. Blank input, separators creating empty words and unknown codes are rejected. Output is normalized to uppercase and single word spaces; original case and formatting are not preserved. Letter/digit mappings follow ITU-R M.1677-1 Annex 1, sections 1.1.1 and 1.1.2; ITU defines additional signs, while this tool supports only the A–Z and 0–9 subset. The word-separating / is this interface’s notation convention; no audio or timing is generated. Morse is not secure encryption. Conversion runs locally in your browser; input is not sent to a server. Changing input or direction invalidates the old result; Clear restores empty input and the text-to-Morse direction.