Bcrypt Generator And Hash Verifier

Bcrypt is a password hashing function designed for secure password storage. Unlike simple hashing (MD5, SHA), bcrypt includes a salt and is intentionally slow to resist brute-force attacks. It’s the industry standard for password hashing.

The cost factor (rounds) controls how computationally expensive the hash is. Each increment doubles the time. 10 is standard (about 100ms), 12 is high security (about 400ms), and 14+ is very slow (1-2 seconds). Higher is more secure but impacts login performance.

Enter the plaintext password and the bcrypt hash into the verification section. Bcrypt will rehash the password with the salt from the hash and compare. If they match, the password is correct.

No! This tool runs 100% in your browser using the bcryptjs library. Your password and hash are never uploaded, transmitted, or stored anywhere. All hashing happens locally on your device.

Yes! Bcrypt generates a random salt for each hash, so the same password will produce different hashes each time. This is a security feature. All hashes are still valid and will verify correctly.

Bcrypt’s underlying algorithm (Blowfish) uses a 72-byte limit. Passwords longer than 72 bytes are truncated. For most use cases, this is more than sufficient. If you need longer passwords, consider using Argon2.