Security & Encoding
Security Tools Browser Only

Free Bcrypt Hash Generator Online

Generate and verify bcrypt password hashes

4 (fastest)10 (default)12 (slowest)
Hashing runs using bcryptjs in your browser. No data leaves your device.

Browser-Based

Uses bcryptjs — runs entirely in your browser, no server upload.

Tunable Cost

Cost factor 4–12 controls hash speed and security level.

Auto-Salted

Each hash gets a unique random salt, so identical passwords hash differently.

How to Use

  1. 1

    Choose mode

    Select "Generate" to create a new bcrypt hash, or "Verify" to check a password against an existing hash.

  2. 2

    Enter the password

    Type the password you want to hash or verify.

  3. 3

    Set the cost factor (Generate mode)

    Choose a cost factor from 4 (fast, for testing) to 12 (secure, ~300ms). The default of 10 is recommended for production.

  4. 4

    Generate or verify

    Click the button. The hash is generated or the verification result is shown.

  5. 5

    Copy the result

    In Generate mode, copy the $2b$ hash string to use in your application.

Frequently Asked Questions

Is the bcrypt generator free?+
Yes, free with no sign-up. The bcryptjs library runs entirely in your browser.
Why is bcrypt better than SHA-256 for passwords?+
SHA-256 is extremely fast — an attacker with a GPU can compute billions of SHA-256 hashes per second. Bcrypt is deliberately slow (tunable via cost factor) so brute-force attacks take years instead of seconds.
Can two bcrypt hashes of the same password be different?+
Yes. Bcrypt automatically generates a random salt for each hash, so hashing the same password twice produces two different hashes. Both still verify correctly against the original password.

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