Split Hex Numbers
Split a longer hex value into several smaller hexes. 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 Split Hex Numbers
- 1. Paste the long hex value. Enter the hexadecimal string you want broken into smaller pieces, such as a long value like 123456 that needs splitting into byte-sized chunks.
- 2. Set the Digits per chunk. Choose how many hex digits go in each piece, for example 2 to split a value into individual bytes rather than larger or smaller groups.
- 3. Set the Separator and copy. Pick the character placed between chunks, such as a space, then copy the split result into a hex editor, protocol field or byte-by-byte listing.
When to use Split Hex Numbers
Split Hex Numbers breaks a long hexadecimal string into fixed-size chunks, most commonly two-digit bytes. It is for whenever a hex value arrives as one unbroken run and you need it segmented to match how a protocol, file format or reader expects it.
- Reformatting a hash into byte pairs. A hash function returned a long unbroken hex string and you want it split into two-character byte groups to match a standard hex dump format.
- Preparing bytes for a manual protocol trace. You copied a continuous hex string from an API response and need it split into individual byte-sized chunks to walk through a binary protocol field by field.
- Breaking a long identifier into readable groups. A long hex-encoded ID is hard to read as one solid block, so you split it into evenly sized chunks for display in documentation or a support ticket.
Examples
Split into bytes
Input
123456
Output
12 34 56
Split into nibbles
Input
abcd
Output
a b c d
About the Split Hex Numbers tool
Split Hex Numbers runs as plain JavaScript in your browser tab, with no server behind it. Split a longer hex value into several smaller hexes. 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.
You can shape the output with 2 settings, including Digits per chunk and Separator, and the result refreshes the moment you change one. 2 worked examples further down the page show exactly what the tool produces for real inputs.
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 Split Hex Numbers 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.