SMS Segment and Cost Preview
Avoid surprise message length costs; it does not establish consent or legal compliance.
Free to use · No email gate · Inputs stay in your browser
Your planning inputs
Examples are editable. All money amounts use U.S. dollars (USD).
Your planning result
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Review the assumptions before acting. Downloads include the information you enter.
The method
GSM-7 uses 160 characters for one segment or 153 per concatenated segment; extension-table characters count twice. Unicode uses 70 UTF-16 code units or 67 per concatenated segment. Worst case includes entered personalization length.
Limits and next steps
Provider encoding, smart-character replacement, toll-free limits, carrier charges and fees may differ. Verify with your provider. No text is sent; this does not establish permission to message.
No data is uploaded, stored or sent to an ad account by this tool. No campaign changes are made.