Timing at 20 WPM
International Morse timing is measured in units: a dot is 1 unit, a dash 3, the gap inside a character 1, the gap between letters 3 and the gap between words 7. At 20 words per minute, one unit is 1200 ÷ 20 = 60 ms.
| Character | Morse | Sounds like | Units | Time | Gap after |
|---|---|---|---|---|---|
| H | .... | di-di-di-dit | 7 | 420 ms | 3 units (180 ms) |
| E | . | dit | 1 | 60 ms | 3 units (180 ms) |
| L | .-.. | di-dah-di-dit | 9 | 540 ms | 3 units (180 ms) |
| L | .-.. | di-dah-di-dit | 9 | 540 ms | 3 units (180 ms) |
| O | --- | dah-dah-dah | 11 | 660 ms | — |
In total, HELLO is 49 units — 2.94 seconds at 20 WPM: 5 characters, 11 dots and 5 dashes. At a beginner's 5 WPM it would take 11.76 seconds.
Sound it out
Operators learn Morse as sound, not as dots to count. Say “di” for a dot inside a character, “dit” for a final dot and “dah” for a dash, with a pause between letters:
di-di-di-dit dit di-dah-di-dit di-dah-di-dit dah-dah-dah
Letters in HELLO that are easy to mix up
These letters differ from the ones in HELLO by a single dot or dash — one flipped element, or one extra or missing at the end — so they are the usual misreadings when you are copying by ear or by light:
| Letter | Morse | Easily confused with |
|---|---|---|
| H | .... | B (-...), F (..-.), L (.-..), S (...) |
| E | . | A (.-), I (..), T (-) |
| L | .-.. | H (....), P (.--.), R (.-.), Z (--..) |
| O | --- | G (--.), K (-.-), M (--), W (.--) |
About HELLO
HELLO is often the first word people translate into Morse, and it makes a good practice word: it contains E, the shortest character in the code (a single dot), the double L (·−·· ·−··), and O, three dashes.
On the air, Morse operators rarely send the word HELLO. A contact usually starts with a general call (CQ) or the other station's call sign, and greetings are abbreviated: GM, GA and GE for good morning, good afternoon and good evening appear in amateur clubs' lists of common CW abbreviations.
Related radio abbreviations
| Abbreviation | Morse | Meaning |
|---|---|---|
| GM | --. -- | Good morning |
| GA | --. .- | Good afternoon (also: go ahead) |
| GE | --. . | Good evening |
HELLO in other codes
| NATO phonetic alphabet | Hotel Echo Lima Lima Oscar |
|---|---|
| Binary (UTF-8) | 01001000 01000101 01001100 01001100 01001111 |
Convert your own text with the Morse code translator, the NATO alphabet converter or the binary translator, or print the Morse code alphabet.