SMS segment counter

How many SMS parts a message costs — GSM-7 vs UCS-2, emoji, and the 160/70-character limits.

How many SMS segments your message uses — GSM-7 fits 160 chars, but a single emoji or non-Latin character drops the whole message to 70.

GSM-7 vs UCS-2 detection with the standard extension table. Runs in this browser.

How to use

  1. Type or paste the message.
  2. Read the encoding (GSM-7 or UCS-2).
  3. Read unit counts, segments, and per-segment limits.

What it supports

GSM-7 basic table + extension chars (| ^ € { } [ ] ~ \ count as two units); any non-GSM char switches the whole message to UCS-2 (70/67 per segment). Emoji and ZWJ sequences count as the units they occupy, not graphemes.

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