Morse Code Translator
Free online Morse code translator, decoder and audio generator. Type any text to convert it to Morse code instantly, or paste dots and dashes to decode Morse back to English — with audio playback, flashing light signals, vibration, and MP3 download. Every conversion follows the official ITU-R M.1677-1 international standard.
What is Morse Code?
Morse code is an encoding system that turns every letter, number, and punctuation mark into a pattern of dots (·) and dashes (–) — short and long signals that can be sent as sound, light, radio waves, or taps. Because it only needs two distinguishable signal lengths, Morse code works over almost any medium: a telegraph wire, a flashlight, a ship's signal lamp, a radio transmitter, or a finger tapping on a table.
Developed in the 1830s and 1840s by Samuel F. B. Morse and his assistant Alfred Vail for the electric telegraph, it became the world's first practical method of instant long-distance communication. The version used everywhere today is International Morse Code, standardized by the International Telecommunication Union as recommendation ITU-R M.1677-1 — the exact table this translator uses.
The code is cleverly efficient: the most common English letters get the shortest patterns. E, the most frequent letter, is a single dot (·). T is a single dash (–). Rare letters like Q (– – · –) and J (· – – –) get longer patterns. This frequency-based design, worked out in the 1830s, anticipated modern data-compression principles by more than a century.
How to Use This Morse Code Translator
This tool is a two-way text to Morse code converter: it translates English to Morse and decodes Morse back to plain text automatically — no button pressing needed, the direction is detected as you type.
- Convert text to Morse code: type or paste any message into the Input box. The Morse translation appears instantly in the Output box, with letters separated by spaces and words separated by a slash ( / ).
- Translate Morse code to text: paste dots and dashes into the same Input box (e.g. .... ..). Use a space between letters and a slash or triple space between words — the decoder converts it back to English automatically.
- Hear, see, or feel it: press Play to listen to authentic Morse audio, enable Light for full-screen flash signals (great for practicing visual Morse), or Vibrate on mobile. Adjust speed (WPM), pitch, and volume with the sliders.
- Save it: press Save MP3 to download your message as an audio file — useful for ringtones, classroom material, puzzles, or geocaching clues.
Everything runs in your browser: nothing you type is sent to a server, there is no signup, and it works offline once the page is loaded.
Send a Secret Message in Morse Code
Every message you type here can become a link. Press Share Link under the output box and the translator copies a URL that opens with your message loaded and ready to play — or press 🔒 Secret Message to send it as a puzzle: your friend sees and hears only the dots and dashes, and has to decode the Morse by ear (or surrender and hit Reveal). It's the fastest way to send "I love you", a birthday greeting, or an inside joke in Morse code over WhatsApp, iMessage, or any chat app — no account needed on either end.
Prefer a file instead of a link? Press Save MP3 and the translator works as a Morse code audio generator: set the speed (WPM), tone frequency, and volume, then save the sound to use as a ringtone, notification, or classroom material.
How Morse Code Timing Works
All of Morse code is built from one unit of time — the length of a dot. Every other duration is defined as a multiple of it, which is why the same message stays readable whether it is sent at 5 or 40 words per minute:
- A dot lasts 1 unit; a dash lasts 3 units.
- The silence between signals inside a letter is 1 unit.
- The silence between letters is 3 units.
- The silence between words is 7 units.
Speed is measured in words per minute (WPM) using the reference word PARIS, which is exactly 50 units long. At 13 WPM (this translator's default) a dot lasts about 92 milliseconds; skilled amateur radio operators comfortably copy 20–30 WPM by ear.
Morse Code Numbers and Punctuation
Letters are in the interactive chart above — click any of them to hear and translate it, or open the full Morse code alphabet with audio. Numbers follow a beautifully regular pattern: every digit is exactly five signals, with dots filling from the front (1–5) and dashes taking over from the back (6–0).
| Number | Morse code | Number | Morse code |
|---|---|---|---|
| 1 | · – – – – | 6 | – · · · · |
| 2 | · · – – – | 7 | – – · · · |
| 3 | · · · – – | 8 | – – – · · |
| 4 | · · · · – | 9 | – – – – · |
| 5 | · · · · · | 0 | – – – – – |
| Mark | Morse code | Mark | Morse code |
|---|---|---|---|
| . period | · – · – · – | / slash | – · · – · |
| , comma | – – · · – – | ! exclamation | – · – · – – |
| ? question | · · – – · · | @ at sign | · – – · – · |
See the guide to numbers in Morse code for memory tricks, or the Morse dictionary for ready-translated common words.
The History of Morse Code and the Telegraph
In 1825, the painter Samuel F. B. Morse was working away from home when a letter arrived telling him his wife was gravely ill. By the time he reached home, she had already been buried. The message had taken days to travel — and that personal tragedy set Morse on a decades-long obsession: making information move faster than a horse.
Sailing home from Europe in 1832, Morse heard a fellow passenger describe electromagnets and sketched the idea of an electric telegraph in his notebook. With the machinist and inventor Alfred Vail — who contributed much of the practical design and helped shape the dot-dash code itself — he built a working system. Vail studied the letter frequencies used by typesetters so the commonest letters would get the shortest signals.
On May 24, 1844, Morse sat in the U.S. Supreme Court chamber in Washington and tapped a four-word message to Vail in Baltimore, 44 miles away: "WHAT HATH GOD WROUGHT." Long-distance communication changed forever. Within a decade telegraph wires webbed across America and Europe; by 1866 a permanent cable crossed the Atlantic seabed, cutting the time for a message between continents from ten days by ship to a few minutes.
The code itself evolved. Morse and Vail's original "American Morse" contained odd internal spaces that were error-prone over radio. In 1848 the German writer Friedrich Clemens Gerke simplified it for the Hamburg–Cuxhaven line, and in 1865 the International Telegraph Union in Paris adopted the refined version as International Morse Code — essentially the same code in use today.
- 1832–1837
Samuel Morse conceives the electric telegraph aboard the ship Sully and builds working prototypes with Alfred Vail and physicist Leonard Gale.
- January 11, 1838
First public demonstration of the telegraph and dot-dash code at Speedwell Ironworks in Morristown, New Jersey.
- May 24, 1844
"What hath God wrought" is telegraphed from Washington, D.C. to Baltimore — the first message on the first commercial long-distance line.
- 1848–1865
Gerke streamlines the code; the International Telegraph Union standardizes International Morse Code at the Paris convention of 1865.
- 1866
The first permanently successful transatlantic telegraph cable links Ireland and Newfoundland.
- 1901
Guglielmo Marconi receives the letter S ( ··· ) across the Atlantic — the first transoceanic wireless Morse transmission, launching the radio era.
- 1906–1908
The Berlin International Radiotelegraph Convention adopts SOS as the universal distress signal, effective July 1, 1908.
- April 15, 1912
RMS Titanic's wireless operators send both CQD and SOS; ships that heard the Morse distress calls rescued more than 700 survivors.
- 1999
The satellite-based GMDSS replaces Morse code for maritime distress. Signing off in 1997, the French Navy famously transmitted: "Calling all. This is our last cry before our eternal silence."
- Today
Morse code lives on in amateur (ham) radio contests, aviation navigation beacons, military signal lamps, and accessibility technology — read more Morse code history and surprising Morse facts.
Famous Morse Code Signals and Abbreviations
A century and a half of real operators tapping under time pressure produced a rich shorthand that still defines radio culture today:
| Signal | Morse code | Meaning |
|---|---|---|
| SOS | · · · – – – · · · | International distress call — sent as one continuous sign, not three letters. Not an abbreviation for anything. |
| CQ | – · – · – – · – | "Calling any station" — an open invitation to reply |
| K | – · – | "Over" — go ahead, I'm listening |
| R | · – · | "Received" — message copied |
| 73 | – – · · · · · · – – | Best regards — the classic ham radio sign-off |
| 88 | – – – · · – – – · · | Love and kisses |
| QTH | – – · – – · · · · | "My location is…" (Q code) |
| QRZ | – – · – · – · – – · · | "Who is calling me?" (Q code) |
Browse the complete list of ham radio abbreviations and Q codes with audio for every entry.
How to Learn Morse Code — Including Tapping
Morse code is a listening skill, not a memorization exercise. People who try to learn it from a printed chart usually stall, because real Morse arrives as rhythm, not as pictures of dots. The methods that actually work train your ear from day one:
- Start with the two one-signal letters. E is a single dot; T is a single dash. Type them into the translator above and press Play until the difference is automatic.
- Add letters in small groups, at full speed. The Koch method teaches characters at 15–20 WPM from the start, adding a new letter only when you copy the current set at 90% accuracy. Slowing the character speed down builds a "counting dots" habit you'll have to unlearn.
- Use Farnsworth spacing. Keep each character fast, but leave extra silence between characters while you think. Shrink the gaps as you improve — this is exactly how our interactive lessons are structured.
- Practice real words early. SOS, HI, OK, and your own name are more motivating than random letters. Our practice drills, timed quiz, and Morse games track your progress across sessions.
Tapping Morse code
To tap Morse on a table, a wall, or someone's hand, you only need two lengths: a quick tap for a dot and either a hold, a double-tap, or a heavier knock for a dash. Keep the rhythm rule from the timing section — pause about three taps' worth of time between letters, and noticeably longer between words. Prisoners of war, most famously U.S. Navy pilot Jeremiah Denton (who blinked T-O-R-T-U-R-E in Morse on television in 1966), used exactly these timing rules when sound or blinking was the only channel available.
Full walkthroughs: how to tap in Morse code, how to blink Morse code, and a complete 30-day learning plan.
The Morse Code Decoding Tree — Read Code Like an Operator
This is the map trained operators carry in their heads. Start at the top. For every signal you hear, take a branch: a dot (·) follows the solid line down-left, a dash (–) follows the dashed line down-right. When the letter ends (a 3-unit pause), whatever node you're standing on is the letter — no lookup table, no counting, just walking a path.
Try it: you hear dah-dit ( – · ). The dash takes you right to T, the dot drops you left to N — done. Hear di-dah-dah ( · – – )? Left to E, right to A, right again to W.
The tree also explains a deep property of Morse code: it can be decoded as it arrives, one signal at a time, because every partial pattern is itself a valid position in the tree. Memorize just the top two rows (E, T, I, A, N, M — six letters, six of the most common in English) and you can already decode real words like MAN, TEA, MINE and NAME by ear. That's exactly where the interactive lessons start, and the Signal Storm game is essentially this tree under time pressure. Keep a copy on paper via the printable Morse code chart.
Morse Code Examples: Common Words and Phrases
Copy any of these into the translator above to hear them, or click through for the full guide to each:
| Word / phrase | Morse code |
|---|---|
| SOS | · · · – – – · · · |
| HI | · · · · · · |
| HELLO | · · · · · · – · · · – · · – – – |
| HELP | · · · · · · – · · · – – · |
| YES | – · – – · · · · |
| NO | – · – – – |
| OK | – – – – · – |
| I LOVE YOU | · · / · – · · – – – · · · – · / – · – – – – – · · – |
Where Morse Code Is Still Used Today
Amateur radio. Morse (called CW, "continuous wave") remains hugely popular among ham operators because it punches through noise and distance that defeats voice transmission — a few watts of CW can span continents. Major contests fill the bands with Morse every year.
Aviation. VOR and NDB navigation beacons identify themselves by broadcasting their station letters in Morse code; pilots still verify beacons by listening for the dots and dashes printed on their charts.
Accessibility. For people with limited mobility, Morse is a complete text-entry method using one or two switches. Android's Gboard keyboard ships with a built-in Morse input mode, and developers have typed, coded, and spoken through Morse interfaces for decades.
Military and maritime. Navies worldwide still train signalmen to use flashing-light Morse between ships — it works under radio silence and cannot be jammed.
Emergencies and everyday curiosity. Knowing SOS ( ··· – – – ··· ) turns any flashlight or whistle into a distress beacon. And plenty of people simply enjoy it — for jewelry engravings, tattoos, puzzles, and secret messages between friends.