Bcrypt Hash Generator | Password Hash & Verify
Generate bcrypt password hashes with selectable cost rounds and verify plain text against an existing bcrypt hash.
Generate Bcrypt Hash
Verify Bcrypt Hash
Generate and Verify Bcrypt Hashes
Enter a test password, choose cost rounds, and create a bcrypt hash for development, demos, or learning how password hashing works. You can also compare plain text with an existing bcrypt hash.
Choosing Cost Rounds
Higher cost rounds make hashing slower and harder to brute-force, but they also require more server time. Production systems should benchmark cost settings on real infrastructure.
Do Not Paste Real Passwords
Use sample values unless you fully understand how the page handles data. Bcrypt hashes are one-way, but plain passwords and production secrets should never be pasted into browser tools casually.
About This Tool
Bcrypt Generator hashes a password using the bcrypt algorithm with an adjustable work factor. Bcrypt is the recommended algorithm for storing passwords securely because it is intentionally slow, making brute-force attacks computationally expensive.
When to Use It
Use this when building an authentication system and you need to hash passwords before storing them, or when verifying that a plain-text password matches a stored bcrypt hash.
How to Use
- Enter the password you want to hash.
- Set the cost factor — 10 to 12 is typical for most applications.
- Click Hash to generate the bcrypt string.
- Copy the hash and store it in your user database.
Frequently Asked Questions
What is the bcrypt work factor?
The work factor controls how many hashing rounds are performed. Each increment doubles the computation time. A factor of 12 balances security with login speed.
Can bcrypt be reversed?
No. Bcrypt is a one-way hash. To verify a password, the plain-text input is hashed with the same embedded salt and compared to the stored hash.
Is bcrypt better than SHA-256 for passwords?
Yes. SHA-256 is designed to be fast, which makes it easy to brute-force. Bcrypt is intentionally slow and includes a salt to prevent rainbow table attacks.