Why does higher salt rounds take longer?

Each additional salt round doubles the computation time. Salt rounds 10-12 are the recommended range for production — high enough to be slow for attackers, low enough for acceptable login latency.

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Bcrypt Hash Generator

Free · No Server

Hash and verify passwords with bcrypt — configurable salt rounds, all client-side.

All hashing runs in your browser — passwords are never sent to any server.

Password

Salt Rounds

12~300ms

8 (fast)11 (default)14 (slow)

Each round doubles computation time. Round 12 = 2¹² iterations.

What is Bcrypt Generator?

The Bcrypt Hash Generator hashes passwords using the bcrypt algorithm (via bcryptjs — a pure JavaScript implementation) entirely in your browser. Configure salt rounds from 8 to 14, hash any password, and verify a password against an existing bcrypt hash. Since all computation runs client-side, passwords never leave your device.

How to Use

1
Hash a password
Enter your password, choose salt rounds (default 12), and click Generate Hash.
2
Copy the hash
Copy the resulting bcrypt hash to use in your application's password storage.
3
Verify a password
Switch to the Verify tab, enter a password and its bcrypt hash, and click Verify to check if they match.

Common Use Cases

Testing password hashing for web applications
Generating test hashes for database seeding
Understanding bcrypt salt rounds and cost factors

Key Features

Salt rounds 8-14 slider
Async hash and verify
Show/hide password toggle
Match / No Match result indicator

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100% Private — No Server Required

All processing happens directly in your browser. No data is uploaded, stored, or transmitted to any server.

Frequently Asked Questions

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