🔐Bcrypt Hash Generator

bcrypt is a password hashing function specifically designed for storing passwords. It is intentionally slow, making brute-force attacks impractical. The cost factor controls computational expense, and a salt is automatically included so the same password always produces a different hash.

How to Use

1
Generate a hash
Go to the 'Generate Hash' tab and enter your plaintext (password). A bcrypt hash is generated automatically once you set a cost factor.
2
Set the cost factor
Use the slider to choose a cost factor from 4 to 14. Higher values make hashing slower and more secure. A value of 10–12 is typical for production use.
3
Verify a hash
Switch to the 'Verify Hash' tab, enter the original text and a bcrypt hash, and the result is shown instantly.

Tips

💡bcrypt is a one-way function — the original password cannot be recovered from a hash. It is ideal for password storage.
💡Each increment of the cost factor doubles the number of iterations: 10 = 1024, 11 = 2048, 12 = 4096.
💡The same password always produces a different hash because a random salt is embedded automatically.
💡All hashing is done entirely in your browser — no data is ever sent to a server.

FAQ

Q. How is bcrypt different from SHA-256?: A. bcrypt is intentionally slow and automatically incorporates a random salt. This makes it resistant to brute-force attacks and rainbow tables. SHA-256 is very fast, which is exactly what makes it unsuitable for hashing passwords.
Q. What is the salt rounds (cost factor)?: A. The cost factor N means bcrypt performs 2^N iterations. At N=10 (1024 iterations), hashing takes about 100ms on a modern CPU. Increase N as hardware gets faster. Values between 10 and 12 are recommended for most applications.
Q. Does bcrypt produce a different hash every time for the same password?: A. Yes. A random salt is generated for each hash, so the same password produces a different hash each time. During verification, bcrypt extracts the embedded salt from the stored hash and recomputes the hash to compare.