Tools
100% Client-Side Privacy
ITU-R M.1677-1 Morse Code Studio • Web Audio Synthesizer

Audio & Visual Morse Code Encoder / Decoder

Translate English text into international Morse code with live acoustic synthesis, optical flashlight strobe, and reverse audio decoding. Features adjustable PARIS WPM speed, telegraph practice pad, and lossless WAV audio file export.

Optical Signal Beacon
STANDBY (OFF)

Morse Audio Synthesizer

High-precision CW sidetone clock powered by client Web Audio API

Playback Progress0%
Speed (PARIS)20 WPM
5 WPM (slow)45 WPM (fast)
Pitch Frequency650 Hz
400 Hz650 Hz (Ham CW)1 kHz
Volume80%
Wave:
Natural Text InputText to Morse
11 chars3 words
Morse Code OutputITU Standard
... --- ... / ... --- ... / ... --- ...
Dits: 18 • Dahs: 9

Historical Presets & Practice Signals

SOS Distress SignalEmergency

The universal maritime distress call adopted by the Berlin International Radiotelegraphic Convention.

"SOS SOS SOS"
Distress Morse DecodeDecode Practice

Test reverse Morse-to-Text decoding with the universal emergency distress code.

"... --- ... / ... --- ... / ... --- ..."
Amateur Radio CQ CallRadio

Standard calling all stations transmission for amateur radio operators.

"CQ CQ CQ DE W1AW K"
Ham Radio Signal DecodeDecode Practice

Practice reverse decoding authentic amateur radio CW station transmissions.

"-.-. --.- / -.-. --.- / -.. . / .-- .---- .- .-- / -.-"
First Telegraph (1844)History

Samuel Morse's historic first official telegram sent from Washington to Baltimore.

"WHAT HATH GOD WROUGHT"
Aviation MaydayEmergency

Voice and telegraph distress signal for life-threatening aviation emergencies.

"MAYDAY MAYDAY MAYDAY"
Apollo 11 Moon LandingSpace

Neil Armstrong's historic lunar touchdown announcement to Mission Control.

"TRANQUILITY BASE HERE THE EAGLE HAS LANDED"
Covert DispatchCipher

Classic covert dispatch with ham radio concluding code 73 (Best regards).

"THE EAGLE FLIES AT MIDNIGHT 73"