#480 · Utility & Safety Text Tool

UTF-8 Byte Counter

Count UTF-8 bytes with distribution by 1-byte, 2-byte, 3-byte, and 4-byte characters, including emoji and Hangul detection.

Text Input

Paste, type, or upload text

Recent History

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How to use this text tool

  • Paste or type text into the input box.
  • Choose the processing mode and options that match your use case.
  • Run the tool or keep live preview enabled.
  • Copy or download the processed result and metric report.

What this tool does

This counter provides detailed UTF-8 byte analysis, including byte distribution and byte-limit status.

Each Unicode character is encoded with TextEncoder and grouped by byte length from 1 to 4 bytes.

The result card shows the processed output, practical interpretation, quality score, and export-ready statistics.

Example

Input: A한😀 → Output: 1-byte: 1, 3-byte: 1, 4-byte: 1

Use cases

  • SMS byte checks
  • Database limits
  • API request limits
  • Unicode debugging

Tips for better output

  • Set a byte limit before writing short messages.
  • Watch for emoji because they often use 4 bytes.
  • Use the breakdown to find heavy characters.

Processing details

The tool analyzes the input in the browser and builds a result object containing output text, statistics, quality score, CSV rows, and JSON export data.

Some conversions are best-effort and may not replace expert review for aviation, accessibility, legal, security, or production-critical communication.

FAQ

How many UTF-8 bytes is this text?

Use this UTF-8 Byte Counter to process the text, review the result metrics, and copy or export the output for that exact use case.

How do I count UTF-8 bytes for emoji?

Use this UTF-8 Byte Counter to process the text, review the result metrics, and copy or export the output for that exact use case.

How many bytes does Korean text use in UTF-8?

Use this UTF-8 Byte Counter to process the text, review the result metrics, and copy or export the output for that exact use case.

How do I check if text exceeds a byte limit?

Use this UTF-8 Byte Counter to process the text, review the result metrics, and copy or export the output for that exact use case.

How do I see UTF-8 byte distribution by character?

Use this UTF-8 Byte Counter to process the text, review the result metrics, and copy or export the output for that exact use case.

Tool module details

FeatureDetails
EncodingUTF-8 only
Breakdown1/2/3/4-byte groups
LimitOptional byte-limit status

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