16-byte random Base64
byteLength = 16
Result: A Base64 string of approximately 24 characters.
Random Base64 Generator
Generate random Base64-encoded strings using the browser's CSPRNG. Useful for session tokens, API keys, and other security-sensitive values that need Base64 encoding.
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
Base64 vs Base64URL - which should I use?
Use Base64 for general purposes. Use Base64URL if the token will appear in URLs (it replaces + with - and / with _, and removes padding).
Is Base64 encoding secure?
Base64 is an encoding, not encryption. It provides no confidentiality - anyone can decode it. Use it for data transport, not for protecting secrets.
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