Unique per Password
Each password gets its own random salt, even if two users have the same password. This means identical passwords produce completely different hashes.
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Securely generate and validate bcrypt password hashes directly in your browser. 100% client-side processing, adjustable salt rounds, and instant validation. Perfect for testing authentication systems.
🔒 Your passwords never leave your browser
All hashing and validation is performed locally via JavaScript. No server communication, no logging, no data storage.
Create secure bcrypt hashes for password storage
💡 Recommended: 10-12 rounds. Higher = more secure but slower.
A salt is a random string added to your password before hashing. It's one of the most important security features in modern password hashing.
Each password gets its own random salt, even if two users have the same password. This means identical passwords produce completely different hashes.
Salts make precomputed rainbow tables useless. Attackers can't use databases of pre-hashed passwords because each salt changes the output.
Bcrypt automatically generates a cryptographically secure salt for every hash. The salt is stored as part of the hash itself, so you don't need to manage it separately.
Your passwords never leave your device. All bcrypt hashing operations happen entirely in your browser using client-side JavaScript. Zero server communication, zero data logging.
Your passwords are hashed entirely in your browser using JavaScript. No network requests are made.
We don't log, store, or cache your passwords anywhere. Close the page and everything is erased from memory.
Hashing runs in an isolated Web Worker thread, ensuring your main browser tab stays responsive.
Uses bcryptjs, a trusted JavaScript implementation of the bcrypt password hashing algorithm.
Type your password into the secure input field
Select cost factor (10-12 recommended)
Create hash or verify existing hash instantly
All bcrypt operations happen entirely in your browser. Your passwords never leave your device or get transmitted to any server.
Create secure bcrypt hashes with customizable salt rounds (cost factor). Perfect for testing authentication systems.
Verify if a plaintext password matches a bcrypt hash. Essential for debugging login issues and testing password verification.
Heavy hashing operations run in a background Web Worker to keep your browser responsive, even with high cost factors.
Show/hide password feature lets you safely review your input without exposing it on screen.
Choose from 4 to 15 rounds. Higher rounds = more secure but slower. Default is 10 (recommended for production).
Test your login flows by generating bcrypt hashes and verifying they work correctly in your backend.
Generate bcrypt hashes when migrating users from legacy password systems to modern bcrypt-based authentication.
Understand how bcrypt works, how salt rounds affect performance, and why bcrypt is the gold standard for password hashing.
Verify if authentication failures are due to incorrect password hashing or comparison logic.
Your passwords stay on your device. Perfect for testing with real passwords without security concerns.
Generate hashes and validate passwords in seconds. No API rate limits or server delays.
Once loaded, the tool works completely offline. No internet connection required for hashing.
No registration, no limits, no hidden costs. Hash unlimited passwords anytime.
Use 10 rounds for general use, 12 for high-security systems. Each increment doubles computation time. Test on your target hardware.
Bcrypt hashes look like: $2a$10$N9qo8uLOickgx2ZMRZoMye. The format is $2a$ (algorithm) $10$ (rounds) followed by salt and hash.
Bcrypt is intentionally slow to prevent brute-force attacks. This 'slowness' is a security feature, not a bug.
Always hash passwords before storing them in databases. Use this tool to test, but implement hashing server-side in production.
Bcrypt is a password hashing function designed by Niels Provos and David Mazières. It's based on the Blowfish cipher and includes a built-in salt to protect against rainbow table attacks. Bcrypt is intentionally slow, making it computationally expensive to crack passwords through brute force.
Yes! This tool runs entirely in your browser using client-side JavaScript. Your passwords are never sent to any server, logged, or stored anywhere. The hashing happens locally on your device, and when you close the page, everything is erased from memory. You can even disconnect from the internet and it will still work.
A salt is a random value that's combined with your password before hashing. It ensures that the same password produces a different hash each time. Bcrypt automatically generates a cryptographically secure salt for each password, protecting against rainbow table attacks and making it impossible to identify users with identical passwords.
Bcrypt is intentionally designed to be slow through its 'cost factor' (rounds). Each round exponentially increases computation time. This slowness is a security feature—it makes brute-force attacks impractical. While a single hash takes milliseconds, an attacker trying billions of passwords faces years of computation time.
For most applications, 10-12 rounds is recommended. 10 rounds (~65ms) is suitable for general use. 12 rounds (~260ms) provides extra security for sensitive systems. Don't go below 10 rounds. Higher rounds (13-15) may cause noticeable delays in user authentication.
This tool is for testing and educational purposes. In production applications, password hashing should ALWAYS be done server-side to prevent client-side tampering. Use bcrypt libraries in your backend (Node.js bcrypt, Python bcrypt, etc.) rather than hashing in the browser.