Comma in Morse code
The comma (,) is dash dash dot dot dash dash in Morse code, said “dah-dah-di-di-dah-dah”. It sounds like the letters MIM sent without gaps, and lasts 19 units, which is 1140 ms at 20 WPM.
Hear the comma
At 15 WPM, , takes 1520 ms to send. Flash or vibrate it in the translator
Part of the ITU standard
The comma is defined in ITU-R M.1677-1, the International Morse code standard, so any trained operator will copy it.
The comma on a timing ruler
Characters that sound like the comma
These are the characters most often copied by mistake for the comma, and why.
Can you hear the difference?
Listen, then pick the one you heard.
The comma in use
- The comma is symmetrical: two dashes, two dots, two dashes.
At a glance
- Morse code
- --..--
- Sounds like
- dah-dah-di-di-dah-dah
- Letters run together
- MIM
- Length
- 19 units
- ITU standard
- Yes
Sources: ITU-R M.1677-1, the International Morse code standard (International Telecommunication Union, 2009). Symbols outside the standard follow common practice in charts and software.