Morse Code for S
S in International Morse is ···, spoken ditditdit. S is three dits. Together with O it makes SOS, which is why it is taught so early.
···
Letter-by-letter Morse for S
S (Sierra) is one Morse character: ···, spoken ditditdit.
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About Morse for the letter S
Operators say ditditdit. The NATO word is Sierra.
S is ··· — 3 elements. All 3 elements are dits.
- Morse
- ···
- Dots / dashes
- 3 · / 0 −
- Characters
- 1
- At 18 WPM
- 400 ms
- NATO word
- Sierra
How to tap S
- The pattern is ··· (ditditdit). A dit is a short tap or flash; a dah is about three times longer.
- S is a single character, so you only need the tiny gap between its own dits and dahs.
- At 18 WPM this takes about 400 ms. Slow down to 12 WPM if you are still learning the rhythm.
- Press Play to hear S, or turn on the lamp and match the flashes.
Easy to mix up
S is easy to mix with H (····). Learn both rhythms so they stay distinct.
Morse Code for S — FAQ
What is the Morse code for S?
The Morse code for the letter S is ···. Say ditditdit.
How do you tap or flash S in Morse?
Match ···: short for each dit, about three times as long for each dah. Press Play on this page, then copy the same timing with a tap, whistle, or flashlight.
How long does S take to send?
At 18 WPM, the letter S takes about 400 ms. At 12 WPM the same ··· pattern is slower but the dit/dah ratios stay identical.
How do you remember Morse for S?
Say ditditdit and attach the NATO word Sierra. S is three dits. Together with O it makes SOS, which is why it is taught so early.
Related Morse lookups
Other high-intent translations — each page has its own Morse, timing, and breakdown.