Vietnamese Morse Code
Vietnamese has no extra Morse codes: its special letters and tones are sent as ordinary letters, Telex style. Type in Vietnamese to see and hear it.
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Pause for a letter gap, pause longer for a word gap. On a computer the space bar works too. Timing follows the speed in Settings.
Decode Morse from sound or a picture
Play a Morse tone near the microphone, or open a recording. The decoder finds the pitch and the speed by itself and works best on a clean tone between 300 and 1500 Hz. An image works when the dots and dashes are solid shapes on a plain background, like a screenshot or a printed card. Nothing is uploaded: everything is processed on your device.
Set overall speed lower than letter speed for Farnsworth timing: letters stay quick, the gaps get longer. This is how most people learn.
Morse code chart
Tap any character to hear it.
Letters
Sent as two letters
Tones, sent at the end of the word
Procedural signals (prosigns)
Sent as one signal with no gap between the letters. Type them in angle brackets, like <SK>.
How it works
 is sent as AA, Ă as AW, Ê as EE, Ô as OO, Ơ as OW, Ư as UW, Đ as DD and ƯƠ as UOW. The tone is sent as one letter at the end of the word: sắc S, huyền F, hỏi R, ngã X, nặng J. So Việt is sent as VIEETJ. The translator converts both ways and shows each Vietnamese word above its letters.
Sources
Vietnamese Wikipedia, section on use in Vietnamese.
Tables checked against their published sources on 25 September 2026.
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