Bcrypt Hash Generator
Generate bcrypt-style password hashes or verify a password against a hash. All processing happens in your browser.
About Bcrypt Hash Generator
Bcrypt Hash Generator creates bcrypt password hashes and verifies plaintext passwords against existing bcrypt hashes. Configure the cost factor (salt rounds, 4–12) to balance security and computation time — higher values are more secure but take longer to compute.
Bcrypt is the recommended algorithm for password hashing in most applications. It's deliberately slow to compute, making brute-force attacks impractical. Unlike SHA or MD5, bcrypt includes a random salt automatically, so two identical passwords produce different hashes.
All hashing runs in your browser using a pure JavaScript bcrypt implementation. Passwords never leave your device.
Features
- ✓Generate bcrypt hash with configurable cost factor
- ✓Verify a plaintext password against a bcrypt hash
- ✓Configurable salt rounds (4–12)
- ✓Timing display showing computation cost
- ✓100% client-side — no server
Common Use Cases
- →Generating bcrypt hashes for test user fixtures
- →Verifying that a password matches a stored bcrypt hash
- →Understanding bcrypt cost factor impact
- →Testing bcrypt implementations in your code
Frequently Asked Questions
What cost factor should I use in production?
A cost factor (salt rounds) of 10–12 is recommended for production. Higher values offer more security but increase response time. Benchmark on your server to find the right balance.
Can bcrypt hashes be reversed?
No. Bcrypt is a one-way hash function. You can only verify whether a plaintext matches a hash — you cannot extract the original password from the hash.