Random Bytes Generator
Generate random bytes in hex, Base64, and a decimal list. All values are generated on your device using a cryptographically secure random generator — nothing is sent to a server.
Everything runs in your browser. Your data is never sent to our servers.
Example
Example Input
16 bytes
Example Output
Hex / Base64 / decimal
How to Use
- 1Open "More settings" to adjust parameters (e.g. size/length) if needed.
- 2Click the Generate button.
- 3Copy the result with the Copy button.
About Random Bytes
Random Bytes produces a number of cryptographically secure random bytes, shown in three forms: hex, Base64, and a list of decimal values 0–255.
Useful when you need raw random data — for testing, seeds, or key material. Its randomness comes from the browser CSPRNG (crypto.getRandomValues).
For a single specific format, use Random Hex or Random Base64. For a direct encryption key, see the AES Key Generator.
FAQ
Are my data or keys sent to a server?
No. Random Bytes runs entirely in your browser using the Web Crypto API and client-side libraries. Your data, passwords, and keys never leave your device.