Text to Morse Code
Convert text to Morse code or decode Morse back to text. Play audio using your browser's Web Audio API.
Text Input
Morse Code Output
Morse Code Reference Chart
Frequently Asked Questions
What is Morse code?
Morse code is a telecommunication encoding system that represents letters and numbers as sequences of dots (·) and dashes (–). It was invented by Samuel Morse in the 1830s and is still used in amateur radio today.
Can I play the Morse code as audio?
Yes. Click the Play button to hear the Morse code using your browser's Web Audio API. No external audio files are needed — the tone is generated entirely in your browser.
What characters are supported?
All 26 English letters (A–Z), digits 0–9, and common punctuation marks including period, comma, question mark, slash, dash, and parentheses.
What does SOS look like in Morse?
SOS is ··· — — — ··· (three dots, three dashes, three dots). It was chosen because it is easy to transmit and recognize.
History of Morse Code
Morse code was invented by Samuel Morse and Alfred Vail in the 1830s to transmit text over the electric telegraph. The original American Morse code was later refined into International Morse Code(ITU-R M.1677), which standardized the dot/dash sequences and is still in use today on amateur radio worldwide.
The famous SOS distress signal (··· ——— ···) was adopted internationally in 1906 — not because it stands for “Save Our Souls”, but because it is the simplest unambiguous pattern to transmit and recognize under distress.
International Morse Code Reference
Morse Code Timing Rules
- A dot (·) = 1 unit of time.
- A dash (—) = 3 units of time.
- Gap between elements within a letter = 1 unit.
- Gap between letters = 3 units.
- Gap between words = 7 units.
Speed is measured in Words Per Minute (WPM), using the word “PARIS” (50 units) as the standard. 20 WPM is considered a competent amateur radio operator; 25+ WPM is expert level.