Generate Random Hex Numbers
Create a list of random hexadecimal numbers. Runs entirely in your browser, so your data never leaves your device.
Output
The result appears here as you type.
How to use Generate Random Hex Numbers
- 1. Set count and length. Enter How many numbers and Digits per number to control the batch size and the hex digit length of each value produced.
- 2. Control zeros and case. Toggle Allow leading zeros to permit values starting with 0, and toggle Uppercase digits to switch between lowercase a-f and uppercase A-F letters.
- 3. Choose a separator. Set Separator to a comma or newline so the hex values paste cleanly into a color palette, config file or code array.
- 4. Copy the hex numbers. Copy the generated base-16 values into a color swatch, memory address test or hashing exercise.
When to use Generate Random Hex Numbers
Generate Random Hex Numbers produces a batch of random base-16 values with a fixed digit count, the format used for colors, memory addresses and hash fragments. Use it whenever a project needs sample hexadecimal strings without hand-typing each digit.
- Generating placeholder hex color codes. A design system prototype needs a dozen random six-digit hex values to fill swatch placeholders before real brand colors are finalized, so Digits per number is set to 6.
- Testing a hex parser or validator. A function that parses hexadecimal strings needs a batch of random valid inputs of varying digit counts to confirm it handles both uppercase and lowercase correctly.
- Mocking memory addresses in a debugger UI. A frontend mockup for a debugging tool needs realistic-looking memory addresses, so generating eight-digit uppercase hex values gives the screenshot an authentic look.
Examples
Five random hex numbers
Output
3f9a07c4, b81d62ee, 09c4f7a2, d15e30b9, 7a6c81f0
Uppercase four-digit values
Output
0F3A, C81D, 9B02
About the Generate Random Hex Numbers tool
Generate Random Hex Numbers runs as plain JavaScript in your browser tab, with no server behind it. Create a list of random hexadecimal numbers. Whatever you put in stays on your device from start to finish.
The tool is part of EditSafely's Number Tools section, 194 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 5 settings, including How many numbers, Digits per number, Allow leading zeros and Uppercase digits, 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
Is Generate Random Hex Numbers free to use?
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?
Everything happens locally. Your browser downloads the tool's code once, then does all the processing itself; nothing you enter is transmitted, stored or logged. You can even go offline after the page loads and it will still work.
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?
No. The tool works in any modern browser on desktop, tablet or phone. There is no account to create, no extension to add and no software to install.
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.