Help in Morse Code: The Pattern, the Timing, and When to Use SOS Instead

HELP, letter by letter

Morse code has no special symbol for the word help — it is simply the four letters spelled out, each separated by a short pause. Here they are, with the way radio operators say them out loud:

• H — ···· — four dots, said di-di-di-dit
• E — · — one dot, said dit. E is the shortest character in the whole code because it is the most common letter in English.
• L — ·–·· — dot, dash, dot, dot, said di-dah-di-dit
• P — ·––· — dot, dash, dash, dot, said di-dah-dah-dit

Written in one line with a space between letters, help in Morse is ···· · ·–·· ·––·. Notice that HELP contains no letter made only of dashes and only three dashes in total; it is a fairly "dotty" word, which makes it quick to tap but easy to blur. The commonest mistake when people key it by hand is running the H and the E together, which turns ···· · into ····· — and five dots is not H-E at all, it is the number 5.

Help me adds a word gap and two more letters: M is –– and E is · again, so the full phrase is ···· · ·–·· ·––· / –– ·. The slash is the convention for a word space when Morse is written down; when it is sent as sound or light, the slash is just a longer silence.

Every pattern on this page is generated by the same table the translator uses, which follows the international standard, ITU-R M.1677. If you copy a pattern from the tool, it will match what you see here character for character.

How long it takes to send — the real numbers

Morse timing is built from one unit: a dot is 1 unit, a dash is 3, the gap inside a letter is 1, the gap between letters is 3 and the gap between words is 7. Those ratios come from ITU-R M.1677, and the speed in words per minute just sets how long one unit lasts (at 15 WPM, one unit is 80 milliseconds). Add up the units for a phrase and you know exactly how long it will take. I worked these out unit by unit from the code table, after checking the patterns against the live translator's output:

• HELP — 37 units — 8.9 s at 5 WPM, 4.4 s at 10 WPM, 3.0 s at 15 WPM, 2.2 s at 20 WPM
• SOS (as three letters) — 27 units — 6.5 s at 5 WPM, 3.2 s at 10, 2.2 s at 15, 1.6 s at 20
• SOS (as one run-together distress signal) — 23 units
• HELP ME — 55 units — 13.2 s at 5 WPM, 4.4 s at 15
• SEND HELP — 71 units — 17.0 s at 5 WPM, 5.7 s at 15
• I NEED HELP — 77 units — 18.5 s at 5 WPM, 6.2 s at 15
• MAYDAY — 65 units — 15.6 s at 5 WPM, 5.2 s at 15

The takeaway is blunt. If you are flashing a torch slowly enough for an untrained eye to follow — and 5 WPM is already fast for light — SOS takes about six and a half seconds while "I need help" takes over eighteen. Over a long night of repeating a signal, that difference is the difference between a rhythm someone notices and a jumble they ignore. The Morse code timing page explains the unit system in more depth if you want to work out your own phrases.

HELP or SOS? Choosing the right one

Use SOS when the goal is to be noticed by anyone. SOS (··· ––– ···) is recognised far beyond people who know Morse: three short, three long, three short is a rhythm that reads as "distress" even to someone who has never learned a single letter. It is short, symmetrical, and hard to mistake for anything else. It is also not an abbreviation — it doesn't stand for "save our souls" — it was picked precisely because the pattern is so distinctive. Our SOS in Morse code page covers its history and how to send it correctly as one unbroken signal.

Use HELP when the person on the other end can read Morse, or when you want the message to be readable in writing rather than recognised as a rhythm. A word on a bracelet, a note tapped on a wall to a friend who knows the code, a puzzle in an escape room, a scene in a story — in all of those, HELP says something more human than SOS does. It is also the better choice for anything playful, because SOS carries a weight that HELP does not; nobody is alarmed by a bracelet that reads ···· · ·–·· ·––·.

In a genuine emergency, reach for the phone first. Modern emergency numbers, mobile networks and satellite messaging on recent phones will get help faster than any signal you can flash. Morse is a fallback for when those fail — no signal, no battery to spare for a call, or no way to speak — and in that fallback, SOS is the one to send. If you can add information after it (your location, how many people, what is wrong), spell it out in plain words afterwards; that is where words like HELP, HURT or WATER earn their place.

Ways to send it when you can't speak

Morse works with anything you can switch on and off, which is why it survives as an emergency skill. The same ···· · ·–·· ·––· pattern can be:

• Flashed with light. A phone screen or torch at night is visible for a long way. Go slowly — the eye needs longer gaps than the ear — and repeat the message with a clear long pause between repetitions so the watcher can find the start. The Morse code light translator on this site flashes your screen (or the torch on Android phones) at a speed you choose. Before you flash at anyone, be aware that rapid flashing can trigger seizures in people with photosensitive epilepsy; WCAG accessibility guidance puts the threshold at three flashes per second, and slow Morse stays well under it.
• Tapped on a surface. Knocking on a wall, a pipe or a table carries surprisingly well through a building. Use a single knock for a dot and a scrape or two quick knocks for a dash if a long knock isn't possible.
• Blinked. Short and long blinks have been used by people who could not speak — the most famous case is the US Navy pilot Jeremiah Denton, who blinked T-O-R-T-U-R-E during a filmed interview as a prisoner of war in 1966. The same idea works at home between two people who both know the code.
• Whistled, beeped or hummed. Short and long notes carry further than speech in wind or noise.
• Written. Dots and dashes scratched into sand, chalked on a rock or worked into a bracelet with two bead colours.

Whichever method you use, the hard part is the gaps, not the dots and dashes. People almost always rush the pause between letters, and without it HELP becomes an unreadable string. Count it out: one beat inside a letter, three beats between letters, seven between words.

Practising it so it's there when you need it

You don't need to learn the whole alphabet to be useful in a pinch. Learn two things until they are automatic: the SOS rhythm, and the four letters of HELP. Both together are eight characters, and you can drill them in a few minutes a day.

A method that works: type HELP into the translator above, set the speed to around 10 WPM, press play and listen with your eyes closed. Then turn the sound off, watch the karaoke highlight instead, and tap along on the table. When you can tap HELP without looking, slow the speed down and switch to the light mode — reading Morse by eye is a different skill from hearing it, and most people find it harder. Finally, try receiving: have a friend send you either SOS or HELP at random using the secret message link, and say which one it was before the reveal.

If you want to go further, the how to learn Morse code guide lays out a full plan, and our list of common words in Morse code covers short replies like YES, NO and OK that pair naturally with HELP. And if you just came here to copy the pattern for a note, a craft or a caption, here it is one more time: help in Morse code is `···· · ·–·· ·––·`.