📖 What is this tool?
bcrypt Generator hashes passwords using PBKDF2-SHA256 (bcrypt-compatible) via the browser's Web Crypto API. Generate secure password hashes for authentication systems with configurable cost factors to balance security and performance.
💡 Example
Input
Password: MySecret123 | Cost: 10
Output
$2b$10$... (bcrypt-format hash)
🛠️ Common Use Cases
- Hash passwords before storing in databases
- Test bcrypt integration in authentication systems
- Learn how password hashing works
- Generate hashes for seeding test databases
- Compare different cost factor performance
❓ Frequently Asked Questions
Why use bcrypt instead of SHA-256 for passwords? ▾
SHA-256 is too fast — attackers can try billions of hashes per second. bcrypt is intentionally slow (adjustable cost factor), making brute-force attacks impractical even with powerful hardware.
What is the cost factor? ▾
The cost factor (rounds) determines how many iterations are performed. Cost 10 = 2^10 = 1024 iterations. Each increase by 1 doubles the time needed, making it future-proof as hardware improves.
Can I use bcrypt in production with this tool? ▾
For production, use a proper bcrypt library like bcryptjs (Node.js) or passlib (Python). This tool demonstrates the algorithm but is intended for learning and testing purposes.
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Your data stays private. All processing happens entirely in your browser. Nothing is ever sent to our servers. You can use this tool offline after the page loads.