What is bcrypt?
bcrypt is a password-hashing algorithm designed to be deliberately slow. Its configurable work factor helps make large-scale password guessing more expensive.
bcrypt Hash Generator
Generate bcrypt password hashes with configurable cost factors and verify matches locally in your browser.
How it worksINPUT SOURCE
Higher values increase security but take longer to compute.
HASH VERIFIER & MATCH CHECKER
STATUS
Waiting for verification hash...
How to generate a bcrypt hash
- Enter the password or test value you want to hash.
- Choose a cost factor that suits your security and performance requirements.
- Copy the generated bcrypt hash for use in your test data or application.
- To verify a password, paste an existing bcrypt hash into the match checker.
Common bcrypt uses
bcrypt is commonly used to store password verifiers for sign-in systems, seed secure test accounts, and check how a password-handling integration behaves.
Password hashing tips
- Store the complete bcrypt output, including its algorithm and cost information.
- Use a unique hash for every password; bcrypt handles this with a unique salt.
- Never use a fast hash such as MD5 or SHA-1 for password storage.
bcrypt Hash Generator FAQ
What bcrypt cost factor should I use?
Use the highest cost factor that keeps authentication responsive for your application. Test it on your production-like hardware and revisit the setting as hardware improves.
Does bcrypt use a salt?
Yes. bcrypt generates and stores a unique salt as part of the resulting hash, so the same password can produce different hashes and does not require separate salt storage.
Can I use this tool to verify a bcrypt password hash?
Yes. Enter a password, then paste a bcrypt hash into the verifier. The tool reports whether the entered password matches that hash.
Is my password sent to a server?
No. Hash generation and verification run locally in your browser. Do not share production credentials unnecessarily, and use a dedicated test password when possible.
Can I decrypt a bcrypt hash?
No. bcrypt is one-way. To check a password, hash it through bcrypt's verification process and compare it with the stored hash.
Why does bcrypt generate a different hash for the same password?
bcrypt uses a fresh random salt for each hash. Different output for the same password is expected and improves password-storage security.
Should I use bcrypt for API keys?
bcrypt is appropriate for secrets that users type and verify. For high-entropy API keys, use a deliberate server-side storage and verification design.
Related Tools
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