32 random bytes
byteLength = 32
Result: 32 bytes shown in hex, Base64, and binary formats.
Random Bytes Generator
Generate random bytes using the browser's CSPRNG and display them in hex, Base64, and binary formats simultaneously. Useful for cryptographic key generation, nonces, IVs, and other security-sensitive applications.
Privacy: this tool processes all data entirely in your browser. Passwords and hashes are never sent to the server.
Enter your values and press Calculate — the result appears here.
Worked examples
Frequently asked questions
What can I use random bytes for?
Random bytes are used for: encryption keys, initialization vectors (IVs), nonces, salts for password hashing, session tokens, API keys, and any other security-sensitive value that must be unpredictable.
Is this truly random?
Yes. It uses crypto.getRandomValues(), which sources randomness from the operating system's CSPRNG (e.g., /dev/urandom on Linux, CryptGenRandom on Windows). This is cryptographically secure.
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