SMS Unit Calculator

Calculate SMS segments and character counts based on GSM-7 and UCS-2 encoding.

Characters0
Segments0
EncodingGSM-7

How it works

  • Standard GSM-7 encoding allows 160 characters per segment.
  • Special characters like emojis or accents force UCS-2 encoding.
  • UCS-2 encoding limits segments to 70 characters.
  • Long messages are split into multiple segments with headers (reducing usable space).

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