morse/

A dot is written . and a dash -. The dots and dashes of one letter are written together, letters are separated by a space, and words by / with a space on each side. Line breaks are kept as they are. For example, SOS is “... --- ...” and HELLO WORLD is “.... . .-.. .-.. --- / .-- --- .-. .-.. -..”.

Not directly. International Morse code only has Latin letters, digits and a few punctuation marks, and no Chinese characters. Chinese telegraph code is a separate table: each character is first turned into a four-digit number, which is then sent in Morse. That needs the telegraph code book, which this tool doesn't include. Characters it doesn't support, such as Chinese characters, é or ñ, are skipped and the rest is translated as usual; the skipped characters are listed in the message under the output. To translate Chinese, you can write it out in pinyin letters first.

A to Z, 0 to 9, and the punctuation listed in ITU-R M.1677-1: . , : ? ' - / ( ) " = + @. There are also five common extensions that are not in the standard: ! & ; _ $. The code used here for & is the same as the standard's “wait” signal. The standard has no multiplication sign; it says to send the code for the letter X, so there is no × here. Case doesn't matter, and curly quotes ‘ ’ “ ” are treated as straight quotes.

A dot can be . · or •, and a dash can be - − – — or _. Separate letters with any whitespace, and words with / or | or three or more spaces. Line breaks are kept as line breaks. Groups it can't recognize come out as ? and are listed in the message. Typical causes are missing spaces between letters (for example SOS written as “...---...”), the wrong number of dots or dashes, or a combination that isn't in the table at all.

Case doesn't matter. Several spaces or tabs count as a single word break. Each line is translated on its own and line breaks are kept; decoding also works line by line. A word made up entirely of unsupported characters is dropped, so it leaves no stray /.

In ITU-R M.1677-1 the left parenthesis is “-.--.” and the right one is “-.--.-”, so they differ, while opening and closing quotation marks share one code, “.-..-.”. If your reference writes both parentheses with the same code, one of them won't match what you get here. When decoding, “-.--.-” gives the right parenthesis.

Not as a single unit. The distress signal SOS is three letters sent with no gaps, “...---...”; here that counts as one unrecognized group and comes out as ?. To get SOS, write “... --- ...” or type the text SOS. The codes for AR (.-.-.) and KN (-.--.) happen to be the same as + and the left parenthesis, so decoding .-.-. gives + and -.--. gives (.

No. The translation happens in your browser and nothing is sent to a server.