UTF-32 Encode a String
Encode a string as its UTF-32 code points in hexadecimal. 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 UTF-32 Encode a String
- 1. Paste the string. Enter any text into the input pane, including characters beyond the basic multilingual plane. UTF-32 Encode a String converts each character to a fixed-width 32-bit hex code point.
- 2. Set the Separator. Set the Separator to a space or any character you prefer to join the eight-digit hex values together, matching the format expected by whatever you paste the result into.
- 3. Copy the hex code points. Copy the resulting sequence of 32-bit hex code points out of the output pane, one value per character, ready to use in a binary format or low-level string test.
When to use UTF-32 Encode a String
UTF-32 Encode a String converts text into its raw 32-bit Unicode code points in hexadecimal, one fixed-width value per character with no surrogate pairs. Use it whenever you need the simplest possible numeric representation of each character in a string.
- Generating fixed-width test data. You are writing a test for code that processes UTF-32 or wide-character strings and need the exact 32-bit hex values for a sample input to embed in a test fixture.
- Confirming a character's exact code point. You want the definitive 32-bit hex code point for a specific character or emoji without ambiguity from surrogate pairs, which UTF-32 avoids entirely by using one unit per character.
- Documenting a low-level text protocol. You are writing a specification for a format that stores text as 32-bit code points and need example encoded values to include alongside the source string.
- Comparing storage size against UTF-8 or UTF-16. You want to see how many bytes a given string would take under UTF-32 compared to more compact encodings, since UTF-32 always uses four bytes per character.
Examples
Encode
Input
AÉ
Output
00000041 000000c9
About the UTF-32 Encode a String tool
UTF-32 Encode a String runs as plain JavaScript in your browser tab, with no server behind it. Encode a string as its UTF-32 code points in hexadecimal. Whatever you put in stays on your device from start to finish.
The tool is part of EditSafely's String Tools section, 159 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 UTF-32 Encode a String 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.