Bcrypt Hash Generator
Generate bcrypt password hashes with adjustable cost factor. Free, private, runs in your browser.
How this tool works
This tool uses the bcryptjs library to hash the entered password. The selected cost factor determines the number of salt rounds, increasing computational effort and security. The resulting hash is a 60‑character string that begins with $2a$ or $2b$.
Reference: RFC 7914.
What Is Bcrypt Hash Generator?
The Bcrypt Hash Generator is a lightweight web‑based utility that creates bcrypt password hashes directly in the browser. By performing all calculations client‑side, it ensures that your plaintext passwords never leave your device, preserving privacy. Developers can quickly generate hashes for testing, seeding databases, or integrating into authentication flows without installing additional software.
Common Use Cases
Developers often need bcrypt hashes when setting up authentication systems, especially for Node.js or Python back‑ends that rely on bcrypt for password storage. This tool simplifies creating test accounts, migrating legacy passwords, or generating salts with specific cost factors for performance tuning. It’s also handy for security workshops where participants can see the impact of higher cost values on computation time.
Frequently Asked Questions
Why choose bcrypt over other hashing algorithms?
Bcrypt incorporates a built‑in salt and a configurable work factor, making it resistant to rainbow‑table attacks and adaptable to increasing hardware capabilities. Its adaptive nature means you can raise the cost as computers get faster.
Is the generated hash safe to use in production?
Yes, as long as you use a sufficient cost factor (typically 12 or higher). The hash format complies with the standard bcrypt specification, ensuring compatibility with most server‑side libraries.
Can I generate hashes for multiple passwords at once?
The current version processes one password per click. For batch operations, consider using a script with the bcrypt library in your preferred language.