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String to Hex Converter — Text to UTF-8 Hex Bytes & Back

Convert text to UTF-8 hex bytes and back. Pick from five separators on encode; decode auto-strips any common separator.

Free No signup Client-side Privacy friendly Updated

How to use

  1. 1 Pick Text → Hex or Hex → Text.
  2. 2 Choose a separator on encode — space, none, 0x, \x, or comma.
  3. 3 Paste your input. Decode auto-strips separators and prefixes.
  4. 4 Copy the result.

Why use this tool

  • UTF-8 aware — emoji and CJK characters round-trip cleanly.
  • Five output separators including C / Python \x escape and 0x-prefixed.
  • Auto-detect on decode — paste hex with any common separator.
  • No upload, no logs, no dependencies.

Frequently asked questions

Why does an emoji turn into 4 hex bytes?

UTF-8 encodes most emoji as 4 bytes. Each byte becomes 2 hex digits, so one emoji becomes 8 hex characters.

Can I paste hex that came from a hex dump?

Yes — the decoder strips whitespace, commas, 0x, and \x prefixes before parsing. The only requirement is an even total of hex digits.

Difference vs the UTF-8 Converter?

Both decode hex bytes back to text. This tool focuses on text → hex with separator pickers; the UTF-8 Converter also emits decimal bytes and \u{HEX} codepoint escapes.

Need text → binary instead?

Use our String to Binary Converter — produces 8-bit groups with optional spacing.

What is String to Hex Converter?

A String to Hex Converter is a tool that converts text into UTF-8 hexadecimal bytes and converts hex back into text. On encoding it offers a choice of five separators between bytes, and on decoding it auto-strips any common separator from the input. The conversion runs in the browser, keeping text on the device.

Features

Text ↔ UTF-8 hex

Encode characters to their exact UTF-8 byte values and decode hex back to text.

Separator options

Pick space, comma, 0x, or none on encode; decoding strips any common separator.

100% private

Runs client-side — your text never leaves the browser.

Example

Input

Zerethon

Output

5a 65 72 65 74 68 6f 6e

Common use cases

  1. 1

    Debug encoding issues

    See the exact bytes behind a string to spot mojibake or stray BOM/whitespace.

  2. 2

    Build hex literals

    Produce hex byte sequences for code, protocols, or firmware.

  3. 3

    Read a hex dump

    Decode a captured hex string back into human-readable text.

Summary

Zerethon's string-to-hex converter turns text into its UTF-8 byte values in hexadecimal (Base16, RFC 4648) and decodes hex back to text, all in your browser. Choose a byte separator on encode; decoding auto-strips common separators. Nothing is uploaded.

Category
Developer
Pricing
Free
Privacy
Browser-based
Signup
Not required

References

Privacy

Your data never leaves your browser unless explicitly stated. String to Hex Converter runs entirely client-side — no server upload, no logging, no tracking of your input.

Compare

Binary vs Hexadecimal

Learn the basics

What is Hexadecimal?

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