S in Morse Code

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Dot-Dot-Dot | Also known as Sierra in the NATO phonetic alphabet

Quick Answer: What is S in Morse code?

S in Morse code is ... (dot-dot-dot). S in Morse code is ... (three dots). SOS begins and ends with S. Common in English text. Hear full words containing S on our free Morse code translator or browse the alphabet chart.

Memory Trick

"Si-si-si" or "SOS starts with S".

Pattern Analysis

  • 3 symbols
  • 3 dots, 0 dashes
  • Starts with dot

Words Starting with S

S = . . .

SOS = . . . - - - . . .

SUN = . . . . . - - .

Related Letters

  • SOS bookends
  • Learn next: E (.), I (..)

FAQ

About MorseCoder

Independent Morse tools · ITU-R M.1677-1 · No fabricated operator identity

These pages document a free browser translator and trainer. Timing follows International Morse (ITU-R M.1677-1). We do not claim an FCC callsign or Extra Class license for the site operator. Use the tools for practice; licensed instruction still matters for on-air work.

Last verified: September 2026 · Standard: ITU-R M.1677-1 · About · Editorial policy · Contact · Privacy