Bcrypt Generator & Verifier
Securely hash passwords and verify existing bcrypt hashes. All processing happens locally in your browser for maximum privacy and security.
Understanding Bcrypt Hashes
A standard bcrypt hash consists of several parts: the algorithm identifier (e.g., $2a$ or $2b$), the cost factor, the salt, and the actual hash. For example, in $2a$10$nOUIs5kJ7naTuTFkBr1meOyv6.H6f9V1hPZ.H9YJ8S.H9YJ8S.H9YJ8S, '10' is the cost.
Because bcrypt is slow by design, it is one of the most secure choices for storing passwords. Our tool helps you quickly generate these hashes for development or verify hashes from your database without needing to write a script.
Bcrypt Generator & Verifier FAQs
What is Bcrypt?
Bcrypt is a password-hashing function based on the Blowfish cipher. It incorporates a salt to protect against rainbow table attacks and is adaptive, meaning you can increase the iteration count (cost) to make it slower and more resistant to brute-force attacks.
What does the 'Cost' factor mean?
The cost factor (or rounds) determines how many iterations of the hashing algorithm are performed. A higher cost increases the time required to calculate a hash, making it harder for attackers to crack passwords. The default is usually 10.
How do I verify a hash?
Switch to the 'Verify' tab, enter the plain-text password and the full bcrypt hash (e.g., $2a$10$...). The tool will tell you instantly if they match.
Is it safe to use this online?
Yes, because our tool runs ENTIRELY in your browser using JavaScript. No data is sent to any server. Your passwords and hashes never leave your computer.