Bcrypt Hash & Compare
Hashes passwords with bcrypt at a configurable cost factor and verifies whether a plaintext matches a given bcrypt hash.
What Bcrypt Hash & Compare does
Bcrypt Hash & Compare is a browser-based tool that generates and verifies bcrypt password hashes. Users input plaintext and select a cost factor (rounds) to produce a hash suitable for securely storing passwords, or paste an existing hash and original text to confirm a match. The output provides the resulting bcrypt hash or a verification result, enabling immediate testing of password security without server involvement.
How to use the Bcrypt Calculator Bcrypt Hash & Compare
- 1
Open the Bcrypt Generator on the site
- 2
Enter the plaintext password in the Text to Hash field
- 3
Adjust the Rounds (Cost Factor) slider or input a specific number, defaulting to 12 for production-grade security
- 4
Click Generate Hash to produce the bcrypt hash or Verify Hash to check a match
- 5
Review the resulting hash or verification status displayed on screen
Best for
Developers and security enthusiasts who need to quickly generate bcrypt hashes or test password verification locally without setting up a server environment.
Limitations
- No unit switching between hashing algorithms
- Results are estimates based on the selected cost factor
- Tool is primarily for testing and learning, not production deployment
Bcrypt Hash & Compare FAQ
- What is bcrypt and why is it used for passwords?
- Bcrypt is a password hashing function designed to be computationally intensive, making it difficult for attackers to crack stored passwords even if they gain access to a database.
- How many rounds (cost factor) should I use?
- 12 rounds is the recommended minimum for production use; more rounds increase security but also processing time, so choose based on your specific security requirements.
- Is my data safe when using this tool?
- All processing happens in your browser using the bcryptjs library; no data is sent to any servers or stored anywhere, ensuring privacy for testing purposes.
- Can I use this tool in a production application?
- This tool is primarily for testing and learning; for production use, implement bcrypt directly in your application using a trusted library rather than relying on an online generator.
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