Bcrypt Hash Generator
Generate bcrypt password hashes with an adjustable cost factor (4-15) and verify existing hashes. Free online bcrypt generator with $2a$, $2b$, $2y$ support. 100% client-side, no data sent to servers.
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What is Bcrypt Hash Generator?
Bcrypt Hash Generator creates secure, salted password hashes using the bcrypt algorithm — the industry standard for password storage. Unlike fast hashes such as MD5 or SHA-256, bcrypt is intentionally slow and includes an adjustable cost factor so it stays resistant to brute-force attacks as hardware improves.
Key Benefits
- Automatic per-hash salt prevents rainbow table attacks
- Adjustable cost factor for future-proofing against faster hardware
- Designed specifically for passwords — intentionally slow to compute
- 100% client-side processing, nothing is uploaded
- Compatible with Node.js, Python, PHP, Ruby, and Go bcrypt libraries
Common Use Cases
- •Hashing passwords before storing them in a database
- •Verifying a user-supplied password against a stored bcrypt hash
- •Migrating away from MD5/SHA-1 to a secure password hash
- •Testing authentication logic during development
- •Security audits and password-strength demonstrations
How to Use the Bcrypt Hash Generator
- Enter your password: Type or paste the password you want to hash into the password field.
- Choose a cost factor: Select a cost factor (default 10). Higher values are more secure but slower. Use 12 or higher for production credentials.
- Generate the hash: Click Generate Hash. The tool creates a unique salt and produces a bcrypt hash string starting with $2a$, $2b$, or $2y$.
- Copy or verify: Copy the generated hash, or switch to the Verify tab to check whether a known password matches an existing bcrypt hash.
Key Features
- Adjustable cost factor from 4 to 15
- Verify existing bcrypt hashes against a password
- Supports $2a$, $2b$, and $2y$ hash variants
- 100% client-side — no data leaves your browser
- Automatic salt generation for every hash
- One-click copy of the generated hash