What is bcrypt?
Bcrypt is a password hashing algorithm designed to store passwords more safely. It adds a salt and uses a configurable work factor so each hash takes deliberate time to compute.
ALT Bcrypt Hash Generator
Generate Bcrypt password hashes for database seeding, testing, or local development. You can also verify an existing hash against a password without sending the value to a server.
ALT Bcrypt Hash Generator helps you create and check bcrypt password hashes with a chosen work factor. Use it as an online bcrypt generator, bcrypt checker, or local test tool for development. Bcrypt is made for password storage, not fast checksums, so each hash is intentionally slow to compute. That delay makes stolen hash lists harder to attack, especially when users choose strong passwords and your app adds basic protections like rate limits.
Secure Password
Generate Hash
Verify Hash
Bcrypt Questions
How does bcrypt work?
Bcrypt combines the password with a random salt, then runs a slow hashing process based on the selected cost value. A higher cost makes each guess slower, which helps defend against brute force attacks.
Is bcrypt secure?
Bcrypt is still a trusted choice for password storage when it is used with a strong cost value and unique salts. For new systems, Argon2 is also worth considering, but bcrypt remains widely supported and practical.
Are bcrypt hashes secure?
Bcrypt hashes are secure when the original passwords are strong and the cost value is high enough for your system. Weak passwords can still be guessed, so hashing should be paired with good password rules and rate limits.
Can bcrypt be decrypted?
No. Bcrypt is a one way hash, not encryption. You verify a password by hashing the entered password and comparing it with the stored bcrypt hash.
Can I decrypt bcrypt online?
No legitimate bcrypt tool can decrypt a bcrypt hash back to text. An online bcrypt checker can only test whether a password matches a hash.
What does bcrypt with salt mean?
Bcrypt creates and stores a salt inside the hash string. You normally do not need to enter a separate salt because the hash already contains the salt, cost, and algorithm marker needed for verification.
What is a $2y$ bcrypt hash?
$2y$ is a bcrypt hash prefix commonly produced by PHP password_hash when using PASSWORD_BCRYPT. It identifies the bcrypt variant used by that password hash.
Can I use this for WordPress, Laravel, PHP, or JavaScript?
This tool is useful for standard bcrypt hashes used in many PHP, Laravel, and JavaScript workflows. WordPress 6.8 and newer use bcrypt by default, but WordPress adds its own $wp handling, so production WordPress passwords should usually be created through WordPress itself.