Morse Code Translator
This interactive Morse code translator converts plain text to International Morse code dots and dashes, decodes Morse sequences back to readable letters, and plays the audio tones through your browser. Type a message or enter dots and dashes to translate instantly.
Type in either box. Letters are separated by a space and words by a slash ( / ).
International Morse code timing and rules
Invented in the 1830s by Samuel Morse and Alfred Vail for early electric telegraphy, Morse code revolutionized global telecommunications by encoding language into sequences of electrical pulses. Modern communications adhere to the International Morse Code standard, which assigns a unique pattern of short signals (dots or "dits") and long signals (dashes or "dahs") to every letter of the Latin alphabet, Arabic numerals, and essential punctuation marks. This online morse code translator provides bidirectional conversion and audio playback.
International Morse code operates under strict timing ratios:
- Dot Duration: The basic unit of time measurement (1 unit).
- Dash Duration: Exactly three times the length of a dot (3 units).
- Intra-character Spacing: The silence between dots and dashes within the same letter is 1 unit.
- Letter Spacing: The silence between distinct letters is 3 units, represented in this tool by a space.
- Word Spacing: The silence between distinct words is 7 units, represented in this tool by a forward slash (
/).
Audio synthesis and tone playback
Morse code was designed primarily for auditory decoding. Experienced radio operators rarely visualize dots and dashes on paper; instead, they recognize the rhythmic melodies of character combinations played over radio frequencies. By clicking Play sound, this tool synthesizes an authentic 620 Hz sinusoidal audio tone via the Web Audio API, allowing you to hear the exact rhythm of your encoded message without downloading audio files.
From telegraph wires to modern emergency signaling
Although satellite communications and internet protocols replaced commercial maritime telegraphy in the late twentieth century, Morse code remains vital in aviation navigation beacons, amateur radio (ham radio), and emergency survival signaling. The famous distress signal SOS (... --- ...) was chosen because its distinct rhythmic pattern is immediately recognizable even through severe atmospheric interference. For another historical tactile encoding system, explore our Braille translator, inspect typographic punctuation marks with the punctuation symbols guide, or copy dots and dividers from bullet point symbols.
Frequently asked questions
How are letters and words separated in this Morse code translator?
Individual letters are separated by a space, while words are separated by a forward slash ( / ), conforming to standard Morse code transcription practice.
What is the standard audio timing for dots and dashes?
A dash is exactly three times longer than a dot. The pause between elements within a letter equals one dot, between letters equals three dots, and between words equals seven dots.
Can the translator decode Morse code with different dash symbols?
Yes. The decoder accepts standard hyphens (-), en dashes (–), em dashes (—), underscores (_), and bullet points (•) or dots (.), translating them cleanly back to text.
Which punctuation marks and numbers does International Morse code support?
International Morse code defines standard sequences for digits 0–9, periods, commas, question marks, quotation marks, exclamation points, colons, parentheses, and ampersands.