Bcrypt Hash Generator

What is a Bcrypt Hash Generator?

A bcrypt hash generator computes bcrypt password hashes — the industry-standard algorithm for securely storing user passwords. Bcrypt was designed in 1999 by Niels Provos and David Mazières specifically for password hashing, with three key properties that make it superior to general-purpose hash functions like SHA-256 or MD5 for this purpose: it is deliberately slow (making brute-force attacks expensive), it incorporates a random salt automatically (preventing rainbow table attacks), and it has an adjustable cost factor (allowing you to increase hashing time as hardware gets faster, maintaining security over time). The cost factor (also called rounds or work factor) controls how many times the internal hashing algorithm is applied — each increment of the cost factor doubles the computation time. A cost of 10 takes roughly 100ms on modern hardware; a cost of 12 takes roughly 400ms. The Bcrypt Hash Generator lets you generate hashes at any cost factor for testing, prototyping, and educational purposes.

How to Use Bcrypt Hash Generator

1. Type or paste the password or text you want to hash into the input field.
2. Adjust the cost factor (rounds) using the slider — higher values are more secure but slower to compute.
3. Click ⚡ Generate Hash to compute the bcrypt hash with a random salt.
4. The full bcrypt hash string (including the algorithm version, cost factor, and salt) appears in the output.
5. Click Copy to copy the hash for use in your application, database seeding, or testing workflow.
6. Each generation produces a different hash from the same input due to the random salt — this is expected and correct.

Frequently Asked Questions