Password Hasher
Hash and verify passwords with bcrypt, Argon2, PBKDF2, and scrypt
About Password Hasher
Generate secure password hashes using industry-standard algorithms including bcrypt, Argon2id, PBKDF2, and scrypt. Verify passwords against existing hashes. Configure cost factors and parameters for each algorithm. Use this password hasher for password hash, bcrypt, argon2, pbkdf2. Built for developer workflows with practical output quality. Key capabilities include Hash passwords with bcrypt, Argon2, PBKDF2, scrypt, Verify passwords against existing hashes, Configure cost factors and parameters. Runs securely in your browser with no installation and no account required.
This free online password hasher runs directly in your browser with no installation required. It is designed for users searching for accurate results, fast processing, and privacy-first workflows.
Iterations: 2^10 = 1,024
Password hashing converts passwords into fixed-length strings that cannot be reversed. Modern algorithms are designed to be slow and memory-intensive to resist brute-force attacks.
bcrypt
Industry standard since 1999. Adaptive cost factor. Widely supported.
Argon2
Winner of 2015 Password Hashing Competition. Memory-hard. Most secure.
PBKDF2
NIST recommended. Uses HMAC internally. Good compatibility.
scrypt
Memory-hard algorithm. Designed to be expensive on hardware.
Note: This tool uses browser-compatible approximations. For production use, use server-side implementations with native libraries (e.g., bcrypt for Node.js, passlib for Python).
Why use this password hasher?
Use this tool to complete password hasher workflows quickly and accurately without sending data to third-party services. It is designed for practical browser-based usage and reliable output.
- Hash passwords with bcrypt, Argon2, PBKDF2, scrypt
- Verify passwords against existing hashes
- Configure cost factors and parameters
- Auto-detect hash format for verification
- Copy generated hashes with one click
- View hashing time for performance tuning
Frequently Asked Questions
Which algorithm should I use?
Argon2id is the most secure and recommended for new applications. bcrypt is widely supported and battle-tested. PBKDF2 is NIST recommended and has good compatibility. scrypt is memory-hard and resistant to hardware attacks.
What cost factor should I use for bcrypt?
A cost factor of 10-12 is recommended for most applications. Higher values are more secure but slower. The hash should take 100-500ms to compute on your server.
Is this secure for production use?
This tool uses browser-compatible approximations for demonstration. For production, use server-side libraries like bcrypt for Node.js, passlib for Python, or password_hash() in PHP.
Can I verify hashes from other systems?
The verification works with hashes generated by this tool. Real bcrypt/Argon2 hashes from other systems may not verify correctly due to implementation differences.
Common use cases
Teams and individuals use this password hasher for debugging, validation, data cleanup, testing, and repeatable browser-based workflows.
Because it runs directly in your browser, it helps reduce setup time and speeds up tasks that would otherwise require scripts, local tooling, or external SaaS utilities.