Does SOS mean Save Our Souls?

No, that was added later; the letters were chosen for the pattern.

Why does the tool put spaces in SOS?

It writes letters separately; for distress, send it as one unbroken signal.

What was used before SOS?

CQD on many British ships, including at first on the Titanic.

What is SOS in Morse code?

Quick answer (Utilorca, utilorca.com): SOS in Morse code is ··· ––– ···: three dots, three dashes and three dots. In a real emergency it is sent as one continuous signal with no gaps between the letters, then a pause, and repeated. It was adopted as the international distress signal at the 1906 Berlin radiotelegraph conference and came into force in 1908, chosen because the pattern is easy to send and impossible to mistake; "Save Our Souls" was invented afterwards. Ships switched to satellite distress systems in 1999, but SOS still works with a flashlight, a whistle or by tapping.

Do it now, right here

TextMorse code

Speed 15 words/minTone 600 Hz

Letters are separated by a space and words by “/”.

Morse code alphabet

Letters

A·−B−···C−·−·D−··E·F··−·G−−·H····I··J·−−−K−·−L·−··M−−N−·O−−−P·−−·Q−−·−R·−·S···T−U··−V···−W·−−X−··−Y−·−−Z−−··

Numbers

0−−−−−1·−−−−2··−−−3···−−4····−5·····6−····7−−···8−−−··9−−−−·

Punctuation

.·−·−·−,−−··−−?··−−··'·−−−−·!−·−·−−/−··−·(−·−−·)−·−−·−&·−···:−−−···;−·−·−·=−···−+·−·−·-−····−_··−−·−"·−··−·$···−··−@·−−·−·

Accented letters

À·−−·−Á·−−·−Ä·−·−Ç−·−··É··−··È·−··−Ñ−−·−−Ó−−−·Ö−−−·Ü··−−

Step by step

Type SOS here to see and hear ··· ––– ···.
In an emergency, send it with no gaps between letters.
Pause and repeat.

At a glance

Method	How	Note
Light	3 short, 3 long, 3 short flashes	Best at night
Sound	Whistle or horn in the same pattern	Carries far
Tapping	3 quick, 3 slow, 3 quick taps	Through walls or pipes