About CodigoMorse.io: free Morse code tools, built carefully

Our mission

Morse code is almost two centuries old, and it still shows up everywhere: in aviation beacons, in amateur radio contests, in bracelets and tattoos, in movies, and in the blinked message of a prisoner of war. Most people meet it once and have no idea how to read it. We want the answer to be one click away.

So we build tools that do one thing well. Type a sentence and get the dots and dashes. Paste dots and dashes and read the sentence. Press play and hear it at a realistic speed. Then, if you are curious, keep reading: every tool is surrounded by guides that explain how the code works, where it came from and how to learn it properly.

We are not a company selling a course or an app. CodigoMorse.io is a free website, supported by the same kind of modest advertising you see on most reference sites, and it will stay free to use.

What the tools do

Everything on the site runs on the same small engine, which implements the International Morse Code table (ITU-R Recommendation M.1677-1) and the standard timing rules: a dash is three dots long, symbols inside a letter are separated by one dot, letters by three and words by seven.

• Morse code translator: English text to Morse and back, with a letter-by-letter breakdown.
• Morse code decoder: paste dots and dashes, or tap them in with the on-screen keys, and read the message.
• Audio translator: hear any message as tones, change the speed in words per minute, adjust the pitch and download a WAV file.
• Light and tapping simulators: see the code as a flashing lamp or practice tapping it with the right rhythm.
• Reference pages: the alphabet, numbers, punctuation, abbreviations and prosigns, and a printable chart.
• Learning material: how to learn Morse code, how to read it, a practice quiz and the history from Samuel Morse and Alfred Vail to today.
• Side tools for related codes: a binary translator, the NATO phonetic alphabet and a Caesar cipher.

Three languages, one engine

The site started in Spanish, added Portuguese for Brazil, and now has a full English edition. The three versions are not machine translations of each other: each one is written for its readers, with its own examples and its own search questions in mind. What they share is the engine and the data, so a translation you get in English is exactly the one you would get in Spanish or Portuguese. Use the language switcher in the header to move between them at any time.

Our accuracy policy

Morse code is a standard, so there is a right answer, and we hold ourselves to it:

• Letters, digits and punctuation follow the ITU-R M.1677-1 table. We do not invent codes for characters the standard does not define; accented letters are mapped to their base letter and unsupported symbols are left out rather than guessed.
• Timing in the audio player uses the PARIS standard: at a given speed in words per minute (WPM), one dot lasts 1.2 / WPM seconds. 20 WPM therefore means a 60 ms dot.
• Historical facts on the guide pages (dates, names, events) are checked against primary or reputable secondary sources before publishing. If you find a mistake, tell us and we will fix it.
• We do not pad pages with claims we cannot back up. If something is uncertain, we say so.

Privacy by design

The translator, decoder and audio tools work entirely inside your browser. The text you type is converted locally and is never uploaded to our servers. You do not need an account, and we do not ask for your email to use anything. The details are in our privacy policy and cookie policy.

Get in touch

Corrections, questions, partnership ideas, press requests or a bug you ran into: write to [email protected] or use the contact page. We usually answer within two business days. If you would like to write for the site, read the guest post guidelines first.