Help in Morse Code

HELP vs SOS — Which Morse Signal to Use in an Emergency

The internationally recognized Morse distress signal is SOS — three dots, three dashes, three dots (... --- ...) — sent as a continuous, repeating sequence. SOS was chosen specifically because it is symmetric, impossible to confuse with other codes, and unmistakable even through noise and interference.

"HELP" in Morse (.... . .-.. .--.) is four distinct letters and takes longer to send. It will be understood by anyone who knows Morse code, but it is not the ITU-standardized distress signal and may not be recognized immediately by emergency services monitoring on standard frequencies.

For emergency preparedness: learn SOS first. It is the signal that coast guard, rescue services, and automated listening stations are trained to recognize. But if you are using Morse for practice, escape rooms, or novelty communication, HELP is a perfectly clear and meaningful word.

The flashing light feature on this tool lets you practice the visual version of HELP — three short, one long, three short, one long — which could be used with a flashlight, car headlights, or any controllable light source in an actual survival situation.