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bcrypt Generator

Generate and verify bcrypt password hashes.

Input data is processed in your browser
Data is never sent to a server

Tool

What is bcrypt Generator?

bcrypt Generator securely hashes passwords using the bcrypt algorithm. Unlike MD5 or the SHA family, it is purpose-built for password hashing, with automatic salt generation and an adjustable computational cost. It also includes a verification feature for checking a generated hash, useful for implementing and debugging authentication systems.

How to Use

  1. Enter the password you want to hash in the input field.
  2. Adjust the cost factor (Salt Rounds) using the slider (recommended: 10-12).
  3. Click "Generate" to produce a bcrypt hash.
  4. Use the verify section to check whether another password matches that hash.

FAQ

What is bcrypt?

bcrypt is a hash function designed specifically for securely storing passwords. It automatically incorporates a salt and lets you adjust the computational cost (rounds), giving it strong resistance to brute-force attacks.

How should I choose the cost factor (Salt Rounds)?

A higher number takes longer to compute and is more secure. 10-12 is commonly recommended, but adjust based on your server's performance and use case.

Why does the same password produce a different hash each time?

bcrypt uses a random salt on every run, so the same input produces a different result each time. This is expected behavior — verification works by comparing the password against the full hash, not by regenerating an identical hash.

Is my data sent to a server?

No. All processing happens in your browser using the bcryptjs library.

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