Generate a Random Hex
Quickly generate random hexadecimal values. Runs entirely in your browser, so your data never leaves your device.
Output
The result appears here as you type.
How to use Generate a Random Hex
- 1. Decide How many values. This generator needs no input text. Set How many to the count of random hex values you want, from a single token to hundreds of rows for seeding a test database.
- 2. Set Digits each. Digits each fixes the length of every value. Eight digits models a 32-bit word like 3f9a1c0e, sixteen matches a 64-bit ID, and thirty-two gives you something shaped like an MD5 digest.
- 3. Copy the fresh values. Each generated value lands on its own line in the output pane. Copy the batch into your fixture file, environment variable or script. Rerunning produces a completely new set every time.
When to use Generate a Random Hex
Generate a Random Hex hands you arbitrary hexadecimal strings at any length and quantity. It covers the everyday need for placeholder tokens, mock IDs and throwaway seeds without writing a loop in a REPL. Everything is generated locally in your browser, so nothing you create is sent anywhere.
- Seeding test fixtures with mock IDs. An integration test suite needs fifty unique 16-digit device identifiers that look realistic. Generate them in one shot and paste the block straight into your JSON fixture.
- Creating placeholder API keys for docs. Documentation screenshots should never show real credentials. A random 32-digit hex string reads exactly like a genuine key while being safe to publish in a tutorial or README.
- Producing nonces for manual protocol testing. When poking at an API with curl that expects a client nonce, grab a fresh 8-digit value here instead of reusing the same one and tripping replay protection.
- Picking arbitrary colors or constants. Need a handful of 6-digit values to use as chart colors or magic numbers in a demo? A quick batch of random hex saves inventing them one keystroke at a time.
Examples
One value
Input
Output
3f9a1c0e
About the Generate a Random Hex tool
Generate a Random Hex runs as plain JavaScript in your browser tab, with no server behind it. Quickly generate random hexadecimal values. 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 How many and Digits each, 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 Generate a Random Hex cost anything?
Yes, it is completely free. All 2,658 tools on EditSafely work without an account, a subscription or usage limits.
Does the generator send anything to a server?
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 do I get a different result?
Run the generator again. Each run is computed fresh on your device, and any options you change are applied to the next result immediately.
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.