Convert Unicode to Bytes
Quickly convert Unicode characters 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 Unicode to Bytes
- 1. Paste the text you want as bytes. Paste the Unicode text you want broken into raw bytes. The tool encodes it as UTF-8 first, so multi-byte characters like emoji or accented letters expand into more than one byte each.
- 2. Set a Separator between values. Set Separator to the character placed between each decimal byte value, such as a space or comma, matching whatever format the receiving system, script, or documentation expects.
- 3. Copy the byte values. Copy the list of byte values and paste it into a hex editor reference, a packet capture note, or a script that needs to construct or compare the exact byte sequence.
When to use Convert Unicode to Bytes
Convert Unicode to Bytes exposes the raw UTF-8 byte values that sit behind any string of text. Reach for it when you need to see, document, or reconstruct exactly how many bytes a piece of text occupies, especially once multi-byte characters are involved.
- Sizing a fixed-width text field. A database column or binary file format allocates a fixed number of bytes per field, and you need to confirm a name or label with accented characters still fits within that byte budget.
- Comparing against a packet capture. You captured network traffic and see a run of byte values in a tool like Wireshark, and converting your guess at the plaintext to bytes lets you check the two side by side.
- Writing a low-level parser test. You are writing unit tests for a custom binary format and need the exact byte sequence a given string of Unicode text should decode to, without hand-calculating UTF-8 by hand.
- Explaining why emoji take more space. A teammate is confused why a message with emoji is byte-heavier than its character count suggests, and showing the actual byte list makes the multi-byte UTF-8 encoding visible.
Examples
Convert
Input
AB
Output
65 66
About the Convert Unicode to Bytes tool
Convert Unicode to Bytes runs as plain JavaScript in your browser tab, with no server behind it. Quickly convert Unicode characters to raw bytes. Whatever you put in stays on your device from start to finish.
The tool is part of EditSafely's Unicode Tools section, 98 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 the Separator setting, and the result refreshes the moment you change it. 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 Unicode 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.