Create a File from Hex Values
Convert hexadecimal numbers to a file. 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 Create a File from Hex Values
- 1. Paste the hex values. Enter the hexadecimal numbers you want turned into a file's raw bytes, one after another, however they were given to you.
- 2. Review how values map to bytes. Each hex value is written into the file at the position it appears, building up the binary content byte by byte in the order you entered them.
- 3. Download the file. Click download to save the resulting binary file. Open it in a hex editor or the relevant application to confirm the bytes came through correctly.
When to use Create a File from Hex Values
Create a File from Hex Values turns a plain list of hexadecimal numbers into a downloadable binary file, entirely in your browser. It is for whenever a hex listing, spec table or generated sequence needs to exist as an actual file rather than just text.
- Assembling a file from a spec's example bytes. A file format specification lists example hex values for a minimal valid file, and you want to actually generate that file to test against a real parser.
- Turning a generated byte sequence into a file. You produced a list of hex values from another tool or script and need them saved as a real binary file for the next step in your workflow.
- Recreating a small data file for a course exercise. An assignment gives you the exact hex bytes a file should contain, like the letters Hi, and you need a quick way to produce that file for submission.
Examples
Bytes to file
Input
48 49
About the Create a File from Hex Values tool
Create a File from Hex Values runs as plain JavaScript in your browser tab, with no server behind it. Convert hexadecimal numbers to a file. Whatever you put in stays on your device from start to finish.
The tool is part of EditSafely's Hex Tools section, 108 single-purpose utilities built around the same idea: open the page, get the result, keep your data to yourself.
There is nothing to configure. Provide the input and the result appears on its own. The finished file is put together in browser memory and saved with the Download button, so it never touches a server on the way to your disk. 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 Create a File from Hex Values 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 save the output?
Click the Download button once the result is ready. The file is built in your browser's memory and handed straight to your downloads folder, without passing through a server.