Hash Generators
Bcrypt Generator
Generate salted bcrypt password hashes in your browser.
Hash a password
Bcrypt hash
(hash appears here)Verify a password against the hash
About this tool
Bcrypt is the de-facto standard for password storage. It's intentionally slow (cost factor configurable) and uses a per-password salt. Output looks like '$2b$12$...'. Verify with the same library on your server.
FAQs
What cost factor should I use?
Pick the highest cost your server can handle within ~250ms per check. 10-12 is typical in 2026.
Why is bcrypt slow?
Slowness is the feature. It makes brute-force attacks much harder. The cost factor is logarithmic - cost 12 is twice as slow as cost 11.
Is the hash unique each time?
Yes - even hashing the same password twice gives different output, because of the random salt embedded in the result.