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About this tool
Translate plain text to International Morse code, decode Morse back to text, and see the exact transmission time at any words-per-minute speed.
This Morse code translator encodes plain text into International Morse code and decodes Morse back into text, using the character set and timing defined in ITU-R Recommendation M.1677-1. It also reports transmission time: a dash is three dot units, gaps inside a character are one unit, between characters three and between words seven, and the standard word PARIS is exactly 50 units, which is what defines words per minute. Useful for amateur radio operators, scouts, escape-room designers and anyone decoding a signal from a puzzle.
Open Morse Code Translator on AltFTool — it loads instantly in your browser.
Choose 'Text → Morse' or 'Morse → Text', then type into 'Text to encode' or into 'Morse to decode (space between letters, / between words)'.
Set 'Sending speed (words per minute)', or press 'Swap sides' to carry the result across and translate it back.
Read the output with 'Dot units in the signal', 'Length of one dot at this speed' and 'Time to send the whole message', then press 'Copy result'.
Letters, figures and the full punctuation list from ITU-R M.1677-1, not a partial chart.
Counts every dot, dash and gap, then prices it at your chosen words-per-minute speed.
Accepts middots, en dashes, underscores and pipes, and flags any sequence it cannot resolve.
SOS is ... --- ... — three dots, three dashes, three dots, sent as one unbroken character with no letter gaps. It is 27 dot units long, which is 1.6 seconds at 20 words per minute.
In words per minute against the standard word PARIS, which is exactly 50 dot units including the word gap. So one dot lasts 60 ÷ (50 × wpm) seconds — 60 ms at 20 wpm and 20 ms at 60 wpm.
Exactly three times as long. The space between elements of the same character is one dot, between two characters three dots, and between two words seven dots — the rules set out in ITU-R M.1677-1.
No. International Morse defines 26 unaccented letters, the ten figures and about 18 punctuation signs. This translator lists any character it had to skip rather than silently dropping it.