Generate Hash
Iterations: 1,024
Est. time: ~100ms
Verify Password
Analyze Hash
About Bcrypt
Cost Factor
The cost determines iterations (2^cost). Cost 10 = 1,024 iterations. Each +1 doubles the time.
Hash Format
$2y$10$salt22chars.hash31chars
Algorithm + cost + salt + hash
Recommendations
Use cost 10-12 for most apps. Increase if login takes <100ms. Max password length: 72 bytes.
Security
Bcrypt is resistant to rainbow tables (salted) and GPU attacks (memory-hard). Still widely recommended.