Bcrypt Generator & Verifier
Hash passwords or verify plain-text against existing hashes. 100% client-side logic to ensure your passwords never leave your browser.
Higher rounds exponentially increase generation time.
Developer guide
About Bcrypt Generator
What is bcrypt?
bcrypt is a password hashing function designed to make guessing expensive. It combines a password with a random salt and a configurable cost factor, then stores the algorithm, cost, salt, and digest in a self-describing hash string. The output is intentionally non-reversible. Bcrypt is for password verification, not for encrypting data or creating general-purpose integrity checks.
How to generate bcrypt hashes safely
Use a cost factor appropriate for your server latency budget, measure it on production-class hardware, and increase it over time as resources improve. Never log plaintext passwords or store a hash where a user can retrieve it. Compare passwords with the bcrypt verifier rather than reimplementing the format. For new systems, evaluate Argon2id as well, and always pair password hashing with rate limits, MFA, breach detection, and a secure recovery flow.
Why client-side bcrypt tools matter
A local generator can help developers understand a hash format or create a disposable fixture without transmitting the test password. It is not a substitute for the server's password policy, library version, cost setting, or authentication storage. Never enter a real user password into a browser utility for testing. Use synthetic values and verify the final implementation inside the service that owns the credential boundary.