Convert UTF8 to Bytes
Quickly convert UTF8-encoded data to raw bytes. Runs entirely in your browser, so your data never leaves your device.
0 chars · 0 lines
Output
The result appears here as you type.
How to use Convert UTF8 to Bytes
- 1. Paste the UTF-8 text. Type or paste the text you want broken into bytes, such as A followed by a euro sign, into the input pane.
- 2. Set the Separator and Format. Choose the character placed between byte values and pick Decimal or Hex from Format. Decimal matches most debugger output; Hex matches hex dumps and low-level protocol documentation.
- 3. Copy the byte list. The output pane lists each byte of the encoded string in your chosen format. Copy it into a test fixture, a bug report or a byte-array literal in code.
When to use Convert UTF8 to Bytes
Convert UTF8 to Bytes lays out exactly which bytes a string occupies once encoded, in either decimal or hex. It answers the question of what a debugger, packet capture or serialization library will actually see when it reads your text off the wire or out of memory.
- Building a byte-array literal for a test. A unit test needs a hardcoded byte array matching a specific string with an emoji or accented character. Generating the decimal byte list here saves manual computation.
- Comparing bytes across two encoding libraries. You suspect two libraries in different languages are producing subtly different UTF-8 output for the same string. Converting the same text here gives you a byte-for-byte reference to compare against.
- Annotating a protocol specification with real byte values. A spec document needs to show the exact hex bytes a client sends for a short text field. This tool generates them directly from a sample string.
Examples
Encode
Input
A€
Output
65 226 130 172
About the Convert UTF8 to Bytes tool
Convert UTF8 to Bytes runs as plain JavaScript in your browser tab, with no server behind it. Quickly convert UTF8-encoded data to raw bytes. Whatever you put in stays on your device from start to finish.
The tool is part of EditSafely's UTF-8 Tools section, 69 single-purpose utilities built around the same idea: open the page, get the result, keep your data to yourself.
You can shape the output with 2 settings, including Separator and Format, and the result refreshes the moment you change one. A worked example further down the page shows exactly what the tool produces for a real input.
That local-first design has practical benefits beyond privacy. The tool keeps working on a flaky connection once the page has loaded, results are instant because nothing round-trips to a server, and it is safe to use with confidential material.
Frequently asked questions
Does Convert UTF8 to Bytes cost anything?
Yes, it is completely free. All 2,658 tools on EditSafely work without an account, a subscription or usage limits.
Is it safe to paste sensitive or confidential data?
No data leaves your device. The whole tool is JavaScript that runs inside your browser tab, so there is no upload, no server-side processing and no log of what you did. If you disconnect from the internet after the page loads, it keeps working.
How much text can I process at once?
There is no fixed limit. Because the work happens on your own device rather than on a shared server, the practical ceiling is your machine's memory, which comfortably handles inputs far larger than typical online tools allow.
Do I need to sign up or install anything?
Nothing to install and no account needed. Open the page in any up-to-date browser, including on a phone or tablet, and the tool is ready.
How do I use the result?
The output panel has a one-click copy button, and you can keep refining the input while you work; the result updates in place as you type.