#481 · Utility & Safety Text Tool

SMS Segment Calculator

Calculate SMS billing segments, encoding type, remaining characters, and Unicode cost triggers before sending a message.

Text Input

Paste, type, or upload text
optional

Recent History

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How to use this text tool

  • Paste or type your text into the input box.
  • Choose the mode and optional setting that matches your use case.
  • Click Process Text or keep live preview enabled.
  • Review the result, quality score, and exportable report.

What this tool does

Calculate SMS segments instantly using GSM-7 and Unicode limits. Detect billing units, remaining characters, extended GSM characters, and Unicode triggers.

This tool estimates SMS segments and billing units from message length and encoding rules.

GSM-7 uses 160 characters for one SMS and 153 for concatenated SMS. Unicode uses 70 and 67.

Example

Input a message, choose auto detection, then review segments, remaining characters, and Unicode trigger characters.

Use cases

  • Bulk SMS cost control
  • OTP message length checks
  • Marketing SMS optimization
  • Support message preparation

Tips for better output

  • Keep SMS under one segment when cost matters.
  • Replace curly quotes and emoji to avoid Unicode fallback.
  • Use the remaining character count before sending.

Processing details

This page performs all analysis in the browser and returns processed output, statistics, CSV rows, and JSON data without uploading your text.

Results are practical diagnostics. For regulated telecom, security, accessibility, or production encoding work, verify against your target platform as well.

FAQ

How many SMS segments is my message?

This SMS Segment Calculator helps you run that check directly in the browser, review the detailed metrics, and copy or export the result for cleanup, debugging, or publishing.

Why did my SMS become 2 segments?

This SMS Segment Calculator helps you run that check directly in the browser, review the detailed metrics, and copy or export the result for cleanup, debugging, or publishing.

How do I check SMS character count before sending?

This SMS Segment Calculator helps you run that check directly in the browser, review the detailed metrics, and copy or export the result for cleanup, debugging, or publishing.

How many Unicode characters fit in one SMS?

This SMS Segment Calculator helps you run that check directly in the browser, review the detailed metrics, and copy or export the result for cleanup, debugging, or publishing.

How do I reduce SMS billing units?

This SMS Segment Calculator helps you run that check directly in the browser, review the detailed metrics, and copy or export the result for cleanup, debugging, or publishing.

Tool module details

ModuleDetails
StandardGSM-7 / Unicode segment rules
RiskUnicode fallback increases cost
ExportTXT, CSV, JSON reports

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