SOS Morse Code: Emergency Signal Guide

Learn the internationally recognized SOS morse code signal (... --- ...). Master audio, visual, and tapping methods for emergency communication.

Quick Answer: SOS in Morse Code

SOS in morse code is ... --- ... - three dots, three dashes, three dots. It is the internationally recognized distress signal used worldwide in emergencies. SOS does NOT stand for "Save Our Souls" - the letters were chosen because this pattern is unmistakable and easy to transmit through sound, light, or tapping. Use our translator tool above to hear and practice the SOS signal.

The SOS Morse Code Pattern Visualized

... | --- | ...
3 short (S) 3 long (O) 3 short (S)

3 Ways to Send SOS Morse Code in an Emergency

1. Sound / Audio

Make three short beeps, followed by three long beeps, followed by three short beeps. Use a whistle, horn, or your voice.

beep-beep-beep | BEEEEP-BEEEEP-BEEEEP | beep-beep-beep

2. Light / Flash

Flash a light or torch three short times, then three long times, then three short times. Use a flashlight, phone screen, or signal mirror.

flash-flash-flash | FLLAASH-FLLAASH-FLLAASH | flash-flash-flash

3. Tapping / Touch

Tap on a surface three short taps, then three long taps, then three short taps. This is the famous method used by prisoners of war.

tap-tap-tap | TAAAP-TAAAP-TAAAP | tap-tap-tap

More Emergency Morse Code Phrases

HE

HELP

.... . .-.. .--.

General call for assistance

HE

HELP ME

.... . .-.. .--. / -- .

Personal emergency

MA

MAYDAY

-- .- -.-- -.. .- -.--

Life-threatening emergency (voice/radio)

UR

URGENT

..- .-. --. . -. -

Urgent but not life-threatening

DA

DANGER

-.. .- -. --. . .-.

Warning of danger

SA

SAVE US

... .- ...- . / ..- ...

Group in danger

Survival Communication Tips Using Morse Code

1

Always signal in 3’s

Three fires . Three blasts on a whistle . Three flashes . Any signal repeated in groups of three is known globally as a distress signal .

2

Repeat SOS constantly

Do not send SOS once. Repeat the pattern with short intervals between the repeats so rescuers have many opportunities to pick up your signal.

3

Use whatever source of light available

Use a phone screen, automobile headlights, a torch or even sunlight reflected off a mirror to flash SOS in morse code visible for miles.

4

Learn morse code before you have to

Practice with our learn morse code guide and morse code translator before you find yourself in an emergency circumstance.

People Also Ask

What does three dots mean in Morse?

Three dots (...) is the letter S. Combined as ... --- ... they form SOS.

How do you tap SOS?

Three short taps, three long taps, three short taps — pause, then repeat.

Did the Titanic use SOS?

Yes — operators sent CQD and SOS. See our history timeline.

SOS Morse Code - Frequently Asked Questions

Master Emergency Morse Code Signals

Practice SOS and other emergency phrases with our free translator tool.

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About the Author: Dr. Stephen Carter

Electrical Engineer · Extra Class Amateur (K1SCW) · CW Academy Advisor · 25+ Years on HF

My grandfather taught me to tap out my first SOS when I was eight, and I have been hooked on Morse ever since. I earned my amateur radio license in 1998 (call sign K1SCW) and have worked CW contacts on six continents. After decades of teaching at CW Academy and fixing clunky online tools for my students, I built this translator so anyone — exam candidates, jewelry makers, or emergency preppers — can practice with real ITU timing, Farnsworth spacing, and zero ads.

Last updated: August 2026 · Content verified against ITU-R M.1677-1 · Full bio & credentials · Privacy