Unicode to UTF-8 Converter

Type or paste any Unicode text and this tool runs it through the browser's TextEncoder to show exactly which bytes UTF-8 produces, either as space-separated hex or as \xNN escape sequences.

What is the Unicode to UTF-8 Converter?

Text on screen is characters; text on disk or on the wire is bytes, and UTF-8 is the encoding that bridges the two. This tool calls the browser's native TextEncoder on your input and prints the resulting byte stream, so you can see precisely how many bytes each character costs and in what order they appear — the same bytes a file save, a network request or a database insert would actually produce.

Key Features

• Uses the browser's built-in TextEncoder — no manual byte math, no library
• Switch between space-separated hex bytes and \xNN escape notation
• Live byte count alongside the character count of the input
• Handles multi-byte characters, emoji and mixed scripts correctly

How It Works

1. Type or paste text into the input panel.
2. The tool encodes it with TextEncoder, which is the same encoder browsers use internally.
3. Each byte of the result is printed as two hex digits, or as \xNN if you switch modes.
4. Copy the byte sequence to paste into code, a hex editor or a bug report.

A Real-World Use Case

A file that "looks right" in one editor sometimes breaks in another because of an encoding mismatch. Pasting the suspect string here shows the exact bytes UTF-8 would produce, which you can then compare against what a hex dump of the actual file shows, quickly narrowing down whether the file is UTF-8 at all.

Frequently Asked Questions

How is this different from the Unicode Analyzer?

The Unicode Analyzer inspects one character at a time and reports its code point, name and other forms. This tool takes a whole string and shows the UTF-8 byte stream the browser would actually send or store for it, which is what you need when debugging encoding rather than identifying a single character.

Why does one character sometimes become several bytes?

UTF-8 is a variable-width encoding: plain ASCII costs one byte, accented Latin and Greek letters usually cost two, most symbols and CJK characters cost three, and emoji cost four. The byte count grows with how far the code point sits from the ASCII range.

What is the \xNN form used for?

It is a common escape notation for raw bytes in languages like Python and C, where each byte of the UTF-8 stream is written as \x followed by two hex digits. It is handy for embedding the exact byte sequence directly in source code.

Everything runs through the browser's own TextEncoder, so your text never leaves the page.