Enter text and choose an action.
Result
Method and example
The mapping follows in-force ITU-R Recommendation M.1677-1. Characters use spaces between signals and a slash between words. Visual dot and dash variants are normalized before decoding.
Worked example
SOS becomes ... --- ... . HELLO WORLD becomes .... . .-.. .-.. --- / .-- --- .-. .-.. -.. .
Behavior and limits
- Supports A–Z, 0–9, and the documented punctuation shown below.
- Decoded letters are uppercase because Morse does not encode letter case separately.
- Unsupported text characters are rejected; invalid Morse tokens appear as � with a warning rather than a fabricated letter.
- Playback is user-initiated, uses standard dot/dash timing at 12, 18, or 24 WPM, and can be stopped at any time.
- Microphone, audio-file, camera decoding, and audio export are outside this tool.
Common mistakes
- Running letters together without character spaces
- Using an unsupported nine-dot token
- Expecting uppercase and lowercase to have different signals
- Treating the slash word separator as a letter
Morse code alphabet
A .- · B -... · C -.-. · D -.. · E . · F ..-. · G --. · H .... · I .. · J .--- · K -.- · L .-.. · M -- · N -. · O --- · P .--. · Q --.- · R .-. · S ... · T - · U ..- · V ...- · W .-- · X -..- · Y -.-- · Z --..
Morse code numbers
0 ----- · 1 .---- · 2 ..--- · 3 ...-- · 4 ....- · 5 ..... · 6 -.... · 7 --... · 8 ---.. · 9 ----.
Common Morse code punctuation
Period .-.-.- · comma --..-- · question mark ..--.. · apostrophe .----. · slash -..-. · parentheses -.--.- · colon ---... · semicolon -.-.-. · equals -...- · plus .-.-. · hyphen -....- · quotation mark .-..-. · at sign .--.-.
How spaces work in Morse code
Use one space between encoded characters. A slash separates words in the translator output, so HI THERE becomes .... .. / - .... . .-. ..
Common Morse code examples
SOS → ... --- .... HELLO → .... . .-.. .-.. ---. THANK YOU → - .... .- -. -.- / -.-- --- ..-.
International Morse source
The mapping and spacing method were reviewed against ITU-R M.1677-1 (10/2009), International Morse code, reviewed September 1, 2026. Optional playback uses a 1,200 ÷ WPM dot duration, a three-dot dash, one-dot element gaps, three-dot letter gaps, and seven-dot word gaps. Playback is synthesized locally after the user selects Play.
Supported punctuation: period, comma, question mark, apostrophe, exclamation mark, slash, parentheses, ampersand, colon, semicolon, equals, plus, hyphen, underscore, quotation mark, dollar sign, and at sign.
Large-text handling
Character counting, case conversion, and reversal accept up to 5,000,000 UTF-16 code units and run only after an explicit action. Morse translation uses a lower 100,000-character text limit because encoded output can expand substantially.