·−· Morse code translator with sound

How to use it

Type or paste a text and the Morse code appears at once: letters are separated by spaces, words by a slash. Paste dots and dashes instead and the translator sees that it is code and reads it back. Dots may be “.”, “·” or “•”, dashes “-”, “−”, “–” or “_”, so code copied from a book or a chat reads without editing.

The alphabet is detected for you: Latin letters use international Morse, Cyrillic ones the Russian table. Going the other way is trickier, because the same marks mean different letters: .-- is W in English but В in Russian. So under the result the tool also shows the other reading, and the “Alphabet” switch lets you pick one explicitly.

Sound and light

“Listen” plays the code as a tone, the lamp blinks along and the tape lights up the letter being sent. Speed is set in words per minute, the way radio operators count it: at 15 words per minute a dot lasts 80 milliseconds. The timing follows the 1–3–1–3–7 rule: a dot is one unit, a dash three, the gap inside a letter one, between letters three, between words seven. “Download WAV” saves the same signal as a file.

Decoding a recording

Drop a WAV, MP3 or OGG file on the “Decode a recording” box. The tool traces how loud the sound is over time, finds the level that separates silence from tone, and splits the beeps into two groups, short and long. Those are the dots and dashes; the length of a dot becomes the unit, and the silences are sorted by it into gaps between letters and between words. The chart shows how the recording was marked up: blue ticks are dots, red ones dashes. Below it you get the code, its reading in Latin and in Russian, and an estimate of the sending speed.

Clean recordings with a single tone read best. If the file has noise, music or several stations at once, the threshold may go wrong; then move the code into the box above and fix it by hand.

Questions

What is SOS in Morse code?

... --- ...: three dots, three dashes, three dots, sent without letter gaps. It does not stand for any words; it was chosen because it is easy to send and hard to mistake. More in the lesson on Morse code.

Why do some letters have short codes and others long ones?

The most frequent English letters got the shortest codes: E is a single dot, T a single dash. Rare letters like Q and Z get four marks. That makes ordinary messages faster to send.

Is Morse code a cipher?

No, it is a code: the table is public and there is no key. It exists to carry text over a wire or radio, not to hide it.

Where does my file go?

Nowhere. The recording is analysed in your browser; nothing is sent to a server.