MORSE CODE SIMULATOR
CW keyer · ITU‑R Punctuation
ready
Decoded text
Auto letter & word spacing
Live pattern
Key down Press & release monitor
Control desk
Timing, audio, calibration & settings
Timing & spacing
words/min
ms
× u
× u
Audio & tone
Hz
50%
Sine CW tone with bandpass filter centered on pitch.
Auto calibration
idle
Press and hold key for ~6 seconds while calibrating to capture dot/dash clusters.
Font & settings
Textarea font size
24 px
Threshold, volume, WPM, gaps and font size are preserved in JSON.