Text to Morse Code Converter & CW Audio Player Online
Translate regular text into International (ITU) Morse code or decode dots and dashes back into plain English in real time. Listen to your message with our built-in CW audio synthesizer and synchronized visual signal flasher, adjust transmission speed (5–35 WPM) and pitch (400–1000 Hz), or download a ready-to-use .wav audio file.
Interactive International (ITU) Morse Code Reference Chart
Click any letter, number, or punctuation tile below to immediately hear its Morse code audio tone:
Letters (A–Z)
Numbers (0–9) & Punctuation
Official ITU Morse Code Timing Rules (1:3:7 Ratio)
International Morse code relies on precise relative timing based on the duration of a single dot (1 dit unit). At a speed of W Words Per Minute (using the standard 50-unit reference word PARIS), 1 unit equals 1200 / W milliseconds:
| Element / Pause | Relative Length | Duration at 18 WPM | Written Representation |
|---|---|---|---|
| Dot (Dit) | 1 unit (Signal ON) |
67 ms |
. (Period or •) |
| Dash (Dah) | 3 units (Signal ON) |
200 ms |
- (Hyphen or −) |
| Intra-character gap | 1 unit (Silence) |
67 ms |
No space between dits/dahs of the same letter (e.g., .-) |
| Inter-character gap (Letter space) | 3 units (Silence) |
200 ms |
Single space ( |
| Word gap (Word space) | 7 units (Silence) |
467 ms |
Forward slash with spaces (/) |
Perguntas frequentes
What is SOS in Morse code?
In Morse code, SOS is written as ... --- ... (three short dots, three long dashes, and three short dots). It is the universal maritime and aviation distress signal chosen for its unmistakable, symmetric rhythm.
How do I format Morse code when decoding back to text?
Separate each Morse letter with a single space () and separate words with a forward slash (/). For example, .... . .-.. .-.. --- / .-- --- .-. .-.. -.. decodes to HELLO WORLD. Our decoder also automatically accepts Unicode bullets (•) and en/em-dashes (−).
Is Morse code case-sensitive?
No. International Morse code uses the same dot-and-dash sequence for both uppercase and lowercase letters. When decoding Morse code back to text, standard output is rendered in uppercase.
Can I save the Morse code audio as a sound file?
Yes! Click Download .wav to export a crystal-clear, 44.1 kHz 16-bit PCM WAV audio file of your message at your chosen WPM speed and frequency pitch.